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Finding the Fourth Proportional to 100,670.66, 151,002.50 and 25,791.42

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Solution

The fourth proportional to 100,670.66, 151,002.50 and 25,791.42 is: 38,686.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,670.66 : 151,002.50 = 25,791.42 : x
  2. Step 2: Convert to fraction form
    100,670.66/151,002.50 = 25,791.42/x
  3. Step 3: Cross multiply
    100,670.66x = 151,002.50 × 25,791.42
  4. Step 4: Simplify right side
    100,670.66x = 3,894,569,335.85
  5. Step 5: Solve for x
    x = 3,894,569,335.85/100,670.66
  6. Step 6: Final answer
    x = 38,686.24

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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.