Home / 123,484.38-170,392.15-78,082.26

Finding the Fourth Proportional to 123,484.38, 170,392.15 and 78,082.26

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Solution

The fourth proportional to 123,484.38, 170,392.15 and 78,082.26 is: 107,743.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,484.38 : 170,392.15 = 78,082.26 : x
  2. Step 2: Convert to fraction form
    123,484.38/170,392.15 = 78,082.26/x
  3. Step 3: Cross multiply
    123,484.38x = 170,392.15 × 78,082.26
  4. Step 4: Simplify right side
    123,484.38x = 13,304,603,963.05
  5. Step 5: Solve for x
    x = 13,304,603,963.05/123,484.38
  6. Step 6: Final answer
    x = 107,743.21

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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.