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Finding the Fourth Proportional to 111,082.26, 153,134.04 and 79,195.80

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Solution

The fourth proportional to 111,082.26, 153,134.04 and 79,195.80 is: 109,176.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,082.26 : 153,134.04 = 79,195.80 : x
  2. Step 2: Convert to fraction form
    111,082.26/153,134.04 = 79,195.80/x
  3. Step 3: Cross multiply
    111,082.26x = 153,134.04 × 79,195.80
  4. Step 4: Simplify right side
    111,082.26x = 12,127,572,805.03
  5. Step 5: Solve for x
    x = 12,127,572,805.03/111,082.26
  6. Step 6: Final answer
    x = 109,176.50

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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.