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Finding the Fourth Proportional to 161,740.80, 242,829.90 and 102,691.80

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Solution

The fourth proportional to 161,740.80, 242,829.90 and 102,691.80 is: 154,176.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,740.80 : 242,829.90 = 102,691.80 : x
  2. Step 2: Convert to fraction form
    161,740.80/242,829.90 = 102,691.80/x
  3. Step 3: Cross multiply
    161,740.80x = 242,829.90 × 102,691.80
  4. Step 4: Simplify right side
    161,740.80x = 24,936,639,524.82
  5. Step 5: Solve for x
    x = 24,936,639,524.82/161,740.80
  6. Step 6: Final answer
    x = 154,176.56

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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.