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Finding the Fourth Proportional to 161,972.40, 242,780.40 and 56,737.20

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Solution

The fourth proportional to 161,972.40, 242,780.40 and 56,737.20 is: 85,043.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,972.40 : 242,780.40 = 56,737.20 : x
  2. Step 2: Convert to fraction form
    161,972.40/242,780.40 = 56,737.20/x
  3. Step 3: Cross multiply
    161,972.40x = 242,780.40 × 56,737.20
  4. Step 4: Simplify right side
    161,972.40x = 13,774,680,110.88
  5. Step 5: Solve for x
    x = 13,774,680,110.88/161,972.40
  6. Step 6: Final answer
    x = 85,043.38

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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.