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Finding the Fourth Proportional to 161,691.59, 242,702.90 and 133,521.89

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Solution

The fourth proportional to 161,691.59, 242,702.90 and 133,521.89 is: 200,419.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,691.59 : 242,702.90 = 133,521.89 : x
  2. Step 2: Convert to fraction form
    161,691.59/242,702.90 = 133,521.89/x
  3. Step 3: Cross multiply
    161,691.59x = 242,702.90 × 133,521.89
  4. Step 4: Simplify right side
    161,691.59x = 32,406,149,855.63
  5. Step 5: Solve for x
    x = 32,406,149,855.63/161,691.59
  6. Step 6: Final answer
    x = 200,419.51

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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.