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Finding the Fourth Proportional to 161,377.80, 242,034.30 and 77,137.80

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Solution

The fourth proportional to 161,377.80, 242,034.30 and 77,137.80 is: 115,691.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,377.80 : 242,034.30 = 77,137.80 : x
  2. Step 2: Convert to fraction form
    161,377.80/242,034.30 = 77,137.80/x
  3. Step 3: Cross multiply
    161,377.80x = 242,034.30 × 77,137.80
  4. Step 4: Simplify right side
    161,377.80x = 18,669,993,426.54
  5. Step 5: Solve for x
    x = 18,669,993,426.54/161,377.80
  6. Step 6: Final answer
    x = 115,691.21

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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.