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Finding the Fourth Proportional to 127,874.72, 176,352.72 and 80,133.28

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Solution

The fourth proportional to 127,874.72, 176,352.72 and 80,133.28 is: 110,512.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,874.72 : 176,352.72 = 80,133.28 : x
  2. Step 2: Convert to fraction form
    127,874.72/176,352.72 = 80,133.28/x
  3. Step 3: Cross multiply
    127,874.72x = 176,352.72 × 80,133.28
  4. Step 4: Simplify right side
    127,874.72x = 14,131,721,890.52
  5. Step 5: Solve for x
    x = 14,131,721,890.52/127,874.72
  6. Step 6: Final answer
    x = 110,512.24

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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.