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Finding the Fourth Proportional to 161,802.20, 242,512.67 and 72,951.68

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Solution

The fourth proportional to 161,802.20, 242,512.67 and 72,951.68 is: 109,341.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,802.20 : 242,512.67 = 72,951.68 : x
  2. Step 2: Convert to fraction form
    161,802.20/242,512.67 = 72,951.68/x
  3. Step 3: Cross multiply
    161,802.20x = 242,512.67 × 72,951.68
  4. Step 4: Simplify right side
    161,802.20x = 17,691,705,120.46
  5. Step 5: Solve for x
    x = 17,691,705,120.46/161,802.20
  6. Step 6: Final answer
    x = 109,341.56

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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.