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Finding the Fourth Proportional to 127,652.52, 191,478.78 and 57,551.88

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Solution

The fourth proportional to 127,652.52, 191,478.78 and 57,551.88 is: 86,327.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,652.52 : 191,478.78 = 57,551.88 : x
  2. Step 2: Convert to fraction form
    127,652.52/191,478.78 = 57,551.88/x
  3. Step 3: Cross multiply
    127,652.52x = 191,478.78 × 57,551.88
  4. Step 4: Simplify right side
    127,652.52x = 11,019,963,769.11
  5. Step 5: Solve for x
    x = 11,019,963,769.11/127,652.52
  6. Step 6: Final answer
    x = 86,327.82

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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.