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Finding the Fourth Proportional to 161,770.60, 242,655.90 and 102,721.60

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Solution

The fourth proportional to 161,770.60, 242,655.90 and 102,721.60 is: 154,082.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,770.60 : 242,655.90 = 102,721.60 : x
  2. Step 2: Convert to fraction form
    161,770.60/242,655.90 = 102,721.60/x
  3. Step 3: Cross multiply
    161,770.60x = 242,655.90 × 102,721.60
  4. Step 4: Simplify right side
    161,770.60x = 24,926,002,297.44
  5. Step 5: Solve for x
    x = 24,926,002,297.44/161,770.60
  6. Step 6: Final answer
    x = 154,082.40

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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.