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Finding the Fourth Proportional to 127,456.89, 191,155.65 and 56,340.92

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Solution

The fourth proportional to 127,456.89, 191,155.65 and 56,340.92 is: 84,498.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,456.89 : 191,155.65 = 56,340.92 : x
  2. Step 2: Convert to fraction form
    127,456.89/191,155.65 = 56,340.92/x
  3. Step 3: Cross multiply
    127,456.89x = 191,155.65 × 56,340.92
  4. Step 4: Simplify right side
    127,456.89x = 10,769,884,375.56
  5. Step 5: Solve for x
    x = 10,769,884,375.56/127,456.89
  6. Step 6: Final answer
    x = 84,498.25

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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.