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Finding the Fourth Proportional to 136,060.37, 187,765.56 and 74,809.15

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Solution

The fourth proportional to 136,060.37, 187,765.56 and 74,809.15 is: 103,237.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,060.37 : 187,765.56 = 74,809.15 : x
  2. Step 2: Convert to fraction form
    136,060.37/187,765.56 = 74,809.15/x
  3. Step 3: Cross multiply
    136,060.37x = 187,765.56 × 74,809.15
  4. Step 4: Simplify right side
    136,060.37x = 14,046,581,286.44
  5. Step 5: Solve for x
    x = 14,046,581,286.44/136,060.37
  6. Step 6: Final answer
    x = 103,237.86

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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.