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Finding the Fourth Proportional to 103,687.38, 143,086.95 and 58,365.24

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Solution

The fourth proportional to 103,687.38, 143,086.95 and 58,365.24 is: 80,543.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,687.38 : 143,086.95 = 58,365.24 : x
  2. Step 2: Convert to fraction form
    103,687.38/143,086.95 = 58,365.24/x
  3. Step 3: Cross multiply
    103,687.38x = 143,086.95 × 58,365.24
  4. Step 4: Simplify right side
    103,687.38x = 8,351,304,177.62
  5. Step 5: Solve for x
    x = 8,351,304,177.62/103,687.38
  6. Step 6: Final answer
    x = 80,543.11

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.