Home / 129,337.56-178,459.05-75,612.15

Finding the Fourth Proportional to 129,337.56, 178,459.05 and 75,612.15

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Solution

The fourth proportional to 129,337.56, 178,459.05 and 75,612.15 is: 104,329.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,337.56 : 178,459.05 = 75,612.15 : x
  2. Step 2: Convert to fraction form
    129,337.56/178,459.05 = 75,612.15/x
  3. Step 3: Cross multiply
    129,337.56x = 178,459.05 × 75,612.15
  4. Step 4: Simplify right side
    129,337.56x = 13,493,672,457.46
  5. Step 5: Solve for x
    x = 13,493,672,457.46/129,337.56
  6. Step 6: Final answer
    x = 104,329.11

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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.