Home / 108,426.87-149,720.92-68,153.60

Finding the Fourth Proportional to 108,426.87, 149,720.92 and 68,153.60

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Solution

The fourth proportional to 108,426.87, 149,720.92 and 68,153.60 is: 94,109.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,426.87 : 149,720.92 = 68,153.60 : x
  2. Step 2: Convert to fraction form
    108,426.87/149,720.92 = 68,153.60/x
  3. Step 3: Cross multiply
    108,426.87x = 149,720.92 × 68,153.60
  4. Step 4: Simplify right side
    108,426.87x = 10,204,019,693.31
  5. Step 5: Solve for x
    x = 10,204,019,693.31/108,426.87
  6. Step 6: Final answer
    x = 94,109.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.