Home / 129,524.28-178,746.54-72,167.46

Finding the Fourth Proportional to 129,524.28, 178,746.54 and 72,167.46

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Solution

The fourth proportional to 129,524.28, 178,746.54 and 72,167.46 is: 99,592.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,524.28 : 178,746.54 = 72,167.46 : x
  2. Step 2: Convert to fraction form
    129,524.28/178,746.54 = 72,167.46/x
  3. Step 3: Cross multiply
    129,524.28x = 178,746.54 × 72,167.46
  4. Step 4: Simplify right side
    129,524.28x = 12,899,683,775.59
  5. Step 5: Solve for x
    x = 12,899,683,775.59/129,524.28
  6. Step 6: Final answer
    x = 99,592.79

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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.