Approval workflow for when an invoice amount exceeds the tolerance set

Approval workflow for when an invoice amount exceeds the tolerance set, can we add an approval cycle(respective user to approve or reject) on the tolerance set for an invoice in case it amount exceeds the tolerance set on the discrepancy between purchase orders and invoices.

We have a Purchase Order for $100.

Percentage of tolerance 1%

Invoice $101: Approval Required (approver to approve or reject)-> If declined then invoice blocked/ If approved then invoice created

Is it feasible or not we need.