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Finding the Fourth Proportional to 188,617.26, 282,750.12 and 129,480.78

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Solution

The fourth proportional to 188,617.26, 282,750.12 and 129,480.78 is: 194,100.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,617.26 : 282,750.12 = 129,480.78 : x
  2. Step 2: Convert to fraction form
    188,617.26/282,750.12 = 129,480.78/x
  3. Step 3: Cross multiply
    188,617.26x = 282,750.12 × 129,480.78
  4. Step 4: Simplify right side
    188,617.26x = 36,610,706,082.69
  5. Step 5: Solve for x
    x = 36,610,706,082.69/188,617.26
  6. Step 6: Final answer
    x = 194,100.51

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.