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Finding the Fourth Proportional to 127,930.60, 176,540.34 and 71,351.56

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Solution

The fourth proportional to 127,930.60, 176,540.34 and 71,351.56 is: 98,462.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,930.60 : 176,540.34 = 71,351.56 : x
  2. Step 2: Convert to fraction form
    127,930.60/176,540.34 = 71,351.56/x
  3. Step 3: Cross multiply
    127,930.60x = 176,540.34 × 71,351.56
  4. Step 4: Simplify right side
    127,930.60x = 12,596,428,661.93
  5. Step 5: Solve for x
    x = 12,596,428,661.93/127,930.60
  6. Step 6: Final answer
    x = 98,462.98

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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.