Home / 127,731.80-176,275.32-71,143.18

Finding the Fourth Proportional to 127,731.80, 176,275.32 and 71,143.18

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Solution

The fourth proportional to 127,731.80, 176,275.32 and 71,143.18 is: 98,180.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,731.80 : 176,275.32 = 71,143.18 : x
  2. Step 2: Convert to fraction form
    127,731.80/176,275.32 = 71,143.18/x
  3. Step 3: Cross multiply
    127,731.80x = 176,275.32 × 71,143.18
  4. Step 4: Simplify right side
    127,731.80x = 12,540,786,820.32
  5. Step 5: Solve for x
    x = 12,540,786,820.32/127,731.80
  6. Step 6: Final answer
    x = 98,180.62

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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.