Home / 129,457.92-178,651.96-75,753.25

Finding the Fourth Proportional to 129,457.92, 178,651.96 and 75,753.25

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Solution

The fourth proportional to 129,457.92, 178,651.96 and 75,753.25 is: 104,539.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,457.92 : 178,651.96 = 75,753.25 : x
  2. Step 2: Convert to fraction form
    129,457.92/178,651.96 = 75,753.25/x
  3. Step 3: Cross multiply
    129,457.92x = 178,651.96 × 75,753.25
  4. Step 4: Simplify right side
    129,457.92x = 13,533,466,622.80
  5. Step 5: Solve for x
    x = 13,533,466,622.80/129,457.92
  6. Step 6: Final answer
    x = 104,539.50

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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.