Home / 123,377.80-170,261.90-66,789.17

Finding the Fourth Proportional to 123,377.80, 170,261.90 and 66,789.17

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Solution

The fourth proportional to 123,377.80, 170,261.90 and 66,789.17 is: 92,169.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,377.80 : 170,261.90 = 66,789.17 : x
  2. Step 2: Convert to fraction form
    123,377.80/170,261.90 = 66,789.17/x
  3. Step 3: Cross multiply
    123,377.80x = 170,261.90 × 66,789.17
  4. Step 4: Simplify right side
    123,377.80x = 11,371,650,983.62
  5. Step 5: Solve for x
    x = 11,371,650,983.62/123,377.80
  6. Step 6: Final answer
    x = 92,169.35

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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.