Home / 127,731.92-176,268.30-71,143.70

Finding the Fourth Proportional to 127,731.92, 176,268.30 and 71,143.70

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Solution

The fourth proportional to 127,731.92, 176,268.30 and 71,143.70 is: 98,177.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,731.92 : 176,268.30 = 71,143.70 : x
  2. Step 2: Convert to fraction form
    127,731.92/176,268.30 = 71,143.70/x
  3. Step 3: Cross multiply
    127,731.92x = 176,268.30 × 71,143.70
  4. Step 4: Simplify right side
    127,731.92x = 12,540,379,054.71
  5. Step 5: Solve for x
    x = 12,540,379,054.71/127,731.92
  6. Step 6: Final answer
    x = 98,177.33

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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.