Home / 127,542.07-175,934.78-79,712.38

Finding the Fourth Proportional to 127,542.07, 175,934.78 and 79,712.38

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Solution

The fourth proportional to 127,542.07, 175,934.78 and 79,712.38 is: 109,957.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,542.07 : 175,934.78 = 79,712.38 : x
  2. Step 2: Convert to fraction form
    127,542.07/175,934.78 = 79,712.38/x
  3. Step 3: Cross multiply
    127,542.07x = 175,934.78 × 79,712.38
  4. Step 4: Simplify right side
    127,542.07x = 14,024,179,158.90
  5. Step 5: Solve for x
    x = 14,024,179,158.90/127,542.07
  6. Step 6: Final answer
    x = 109,957.28

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1.5x scale

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.