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Finding the Fourth Proportional to 123,794.25, 170,874.96 and 79,082.25

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Solution

The fourth proportional to 123,794.25, 170,874.96 and 79,082.25 is: 109,158.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,794.25 : 170,874.96 = 79,082.25 : x
  2. Step 2: Convert to fraction form
    123,794.25/170,874.96 = 79,082.25/x
  3. Step 3: Cross multiply
    123,794.25x = 170,874.96 × 79,082.25
  4. Step 4: Simplify right side
    123,794.25x = 13,513,176,305.46
  5. Step 5: Solve for x
    x = 13,513,176,305.46/123,794.25
  6. Step 6: Final answer
    x = 109,158.35

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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.