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Finding the Fourth Proportional to 100,670.53, 151,002.31 and 25,791.30

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Solution

The fourth proportional to 100,670.53, 151,002.31 and 25,791.30 is: 38,686.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,670.53 : 151,002.31 = 25,791.30 : x
  2. Step 2: Convert to fraction form
    100,670.53/151,002.31 = 25,791.30/x
  3. Step 3: Cross multiply
    100,670.53x = 151,002.31 × 25,791.30
  4. Step 4: Simplify right side
    100,670.53x = 3,894,545,877.90
  5. Step 5: Solve for x
    x = 3,894,545,877.90/100,670.53
  6. Step 6: Final answer
    x = 38,686.06

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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.