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Finding the Fourth Proportional to 136,754.96, 188,731.31 and 76,337.35

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Solution

The fourth proportional to 136,754.96, 188,731.31 and 76,337.35 is: 105,350.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,754.96 : 188,731.31 = 76,337.35 : x
  2. Step 2: Convert to fraction form
    136,754.96/188,731.31 = 76,337.35/x
  3. Step 3: Cross multiply
    136,754.96x = 188,731.31 × 76,337.35
  4. Step 4: Simplify right side
    136,754.96x = 14,407,247,213.91
  5. Step 5: Solve for x
    x = 14,407,247,213.91/136,754.96
  6. Step 6: Final answer
    x = 105,350.82

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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.