Home / 129,053.28-178,093.68-72,464.76

Finding the Fourth Proportional to 129,053.28, 178,093.68 and 72,464.76

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Solution

The fourth proportional to 129,053.28, 178,093.68 and 72,464.76 is: 100,001.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,053.28 : 178,093.68 = 72,464.76 : x
  2. Step 2: Convert to fraction form
    129,053.28/178,093.68 = 72,464.76/x
  3. Step 3: Cross multiply
    129,053.28x = 178,093.68 × 72,464.76
  4. Step 4: Simplify right side
    129,053.28x = 12,905,515,778.72
  5. Step 5: Solve for x
    x = 12,905,515,778.72/129,053.28
  6. Step 6: Final answer
    x = 100,001.46

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Double scale
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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.