Home / 125,142.22-172,694.88-67,780.11

Finding the Fourth Proportional to 125,142.22, 172,694.88 and 67,780.11

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Solution

The fourth proportional to 125,142.22, 172,694.88 and 67,780.11 is: 93,535.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,142.22 : 172,694.88 = 67,780.11 : x
  2. Step 2: Convert to fraction form
    125,142.22/172,694.88 = 67,780.11/x
  3. Step 3: Cross multiply
    125,142.22x = 172,694.88 × 67,780.11
  4. Step 4: Simplify right side
    125,142.22x = 11,705,278,132.29
  5. Step 5: Solve for x
    x = 11,705,278,132.29/125,142.22
  6. Step 6: Final answer
    x = 93,535.81

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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.