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Finding the Fourth Proportional to 109,788.78, 151,508.63 and 59,487.78

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Solution

The fourth proportional to 109,788.78, 151,508.63 and 59,487.78 is: 82,093.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,788.78 : 151,508.63 = 59,487.78 : x
  2. Step 2: Convert to fraction form
    109,788.78/151,508.63 = 59,487.78/x
  3. Step 3: Cross multiply
    109,788.78x = 151,508.63 × 59,487.78
  4. Step 4: Simplify right side
    109,788.78x = 9,012,912,049.54
  5. Step 5: Solve for x
    x = 9,012,912,049.54/109,788.78
  6. Step 6: Final answer
    x = 82,093.20

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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.