Home / 123,519.20-170,456.64-66,930.08

Finding the Fourth Proportional to 123,519.20, 170,456.64 and 66,930.08

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Solution

The fourth proportional to 123,519.20, 170,456.64 and 66,930.08 is: 92,363.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,519.20 : 170,456.64 = 66,930.08 : x
  2. Step 2: Convert to fraction form
    123,519.20/170,456.64 = 66,930.08/x
  3. Step 3: Cross multiply
    123,519.20x = 170,456.64 × 66,930.08
  4. Step 4: Simplify right side
    123,519.20x = 11,408,676,551.73
  5. Step 5: Solve for x
    x = 11,408,676,551.73/123,519.20
  6. Step 6: Final answer
    x = 92,363.59

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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.