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Finding the Fourth Proportional to 127,412.60, 191,141.86 and 52,491.80

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Solution

The fourth proportional to 127,412.60, 191,141.86 and 52,491.80 is: 78,747.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,412.60 : 191,141.86 = 52,491.80 : x
  2. Step 2: Convert to fraction form
    127,412.60/191,141.86 = 52,491.80/x
  3. Step 3: Cross multiply
    127,412.60x = 191,141.86 × 52,491.80
  4. Step 4: Simplify right side
    127,412.60x = 10,033,380,286.75
  5. Step 5: Solve for x
    x = 10,033,380,286.75/127,412.60
  6. Step 6: Final answer
    x = 78,747.16

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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.