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Finding the Fourth Proportional to 125,099.91, 172,654.65 and 74,108.70

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Solution

The fourth proportional to 125,099.91, 172,654.65 and 74,108.70 is: 102,279.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,099.91 : 172,654.65 = 74,108.70 : x
  2. Step 2: Convert to fraction form
    125,099.91/172,654.65 = 74,108.70/x
  3. Step 3: Cross multiply
    125,099.91x = 172,654.65 × 74,108.70
  4. Step 4: Simplify right side
    125,099.91x = 12,795,211,660.46
  5. Step 5: Solve for x
    x = 12,795,211,660.46/125,099.91
  6. Step 6: Final answer
    x = 102,279.94

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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.