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Finding the Fourth Proportional to 161,767.70, 242,565.15 and 68,167.70

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Solution

The fourth proportional to 161,767.70, 242,565.15 and 68,167.70 is: 102,215.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,767.70 : 242,565.15 = 68,167.70 : x
  2. Step 2: Convert to fraction form
    161,767.70/242,565.15 = 68,167.70/x
  3. Step 3: Cross multiply
    161,767.70x = 242,565.15 × 68,167.70
  4. Step 4: Simplify right side
    161,767.70x = 16,535,108,375.66
  5. Step 5: Solve for x
    x = 16,535,108,375.66/161,767.70
  6. Step 6: Final answer
    x = 102,215.14

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.