Home / 127,091.64-175,391.12-76,780.92

Finding the Fourth Proportional to 127,091.64, 175,391.12 and 76,780.92

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Solution

The fourth proportional to 127,091.64, 175,391.12 and 76,780.92 is: 105,960.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,091.64 : 175,391.12 = 76,780.92 : x
  2. Step 2: Convert to fraction form
    127,091.64/175,391.12 = 76,780.92/x
  3. Step 3: Cross multiply
    127,091.64x = 175,391.12 × 76,780.92
  4. Step 4: Simplify right side
    127,091.64x = 13,466,691,553.43
  5. Step 5: Solve for x
    x = 13,466,691,553.43/127,091.64
  6. Step 6: Final answer
    x = 105,960.48

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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.