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Finding the Fourth Proportional to 127,978.68, 191,967.66 and 44,872.68

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Solution

The fourth proportional to 127,978.68, 191,967.66 and 44,872.68 is: 67,308.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,978.68 : 191,967.66 = 44,872.68 : x
  2. Step 2: Convert to fraction form
    127,978.68/191,967.66 = 44,872.68/x
  3. Step 3: Cross multiply
    127,978.68x = 191,967.66 × 44,872.68
  4. Step 4: Simplify right side
    127,978.68x = 8,614,103,377.53
  5. Step 5: Solve for x
    x = 8,614,103,377.53/127,978.68
  6. Step 6: Final answer
    x = 67,308.89

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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.