Home / 124,711.78-172,158.90-79,451.82

Finding the Fourth Proportional to 124,711.78, 172,158.90 and 79,451.82

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Solution

The fourth proportional to 124,711.78, 172,158.90 and 79,451.82 is: 109,679.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,711.78 : 172,158.90 = 79,451.82 : x
  2. Step 2: Convert to fraction form
    124,711.78/172,158.90 = 79,451.82/x
  3. Step 3: Cross multiply
    124,711.78x = 172,158.90 × 79,451.82
  4. Step 4: Simplify right side
    124,711.78x = 13,678,337,934.20
  5. Step 5: Solve for x
    x = 13,678,337,934.20/124,711.78
  6. Step 6: Final answer
    x = 109,679.60

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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.