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Finding the Fourth Proportional to 109,691.75, 151,374.75 and 59,390.75

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Solution

The fourth proportional to 109,691.75, 151,374.75 and 59,390.75 is: 81,959.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,691.75 : 151,374.75 = 59,390.75 : x
  2. Step 2: Convert to fraction form
    109,691.75/151,374.75 = 59,390.75/x
  3. Step 3: Cross multiply
    109,691.75x = 151,374.75 × 59,390.75
  4. Step 4: Simplify right side
    109,691.75x = 8,990,259,933.56
  5. Step 5: Solve for x
    x = 8,990,259,933.56/109,691.75
  6. Step 6: Final answer
    x = 81,959.31

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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.