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Finding the Fourth Proportional to 103,614.87, 155,216.53 and 79,839.93

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Solution

The fourth proportional to 103,614.87, 155,216.53 and 79,839.93 is: 119,601.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,614.87 : 155,216.53 = 79,839.93 : x
  2. Step 2: Convert to fraction form
    103,614.87/155,216.53 = 79,839.93/x
  3. Step 3: Cross multiply
    103,614.87x = 155,216.53 × 79,839.93
  4. Step 4: Simplify right side
    103,614.87x = 12,392,476,890.04
  5. Step 5: Solve for x
    x = 12,392,476,890.04/103,614.87
  6. Step 6: Final answer
    x = 119,601.34

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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.