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Finding the Fourth Proportional to 161,909.71, 242,864.55 and 43,577.97

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Solution

The fourth proportional to 161,909.71, 242,864.55 and 43,577.97 is: 65,366.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,909.71 : 242,864.55 = 43,577.97 : x
  2. Step 2: Convert to fraction form
    161,909.71/242,864.55 = 43,577.97/x
  3. Step 3: Cross multiply
    161,909.71x = 242,864.55 × 43,577.97
  4. Step 4: Simplify right side
    161,909.71x = 10,583,544,073.96
  5. Step 5: Solve for x
    x = 10,583,544,073.96/161,909.71
  6. Step 6: Final answer
    x = 65,366.95

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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.