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Finding the Fourth Proportional to 127,659.16, 176,169.90 and 71,072.56

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Solution

The fourth proportional to 127,659.16, 176,169.90 and 71,072.56 is: 98,080.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,659.16 : 176,169.90 = 71,072.56 : x
  2. Step 2: Convert to fraction form
    127,659.16/176,169.90 = 71,072.56/x
  3. Step 3: Cross multiply
    127,659.16x = 176,169.90 × 71,072.56
  4. Step 4: Simplify right side
    127,659.16x = 12,520,845,787.94
  5. Step 5: Solve for x
    x = 12,520,845,787.94/127,659.16
  6. Step 6: Final answer
    x = 98,080.28

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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.