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Finding the Fourth Proportional to 141,488, 195,281.17 and 81,099.12

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Solution

The fourth proportional to 141,488, 195,281.17 and 81,099.12 is: 111,932.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,488 : 195,281.17 = 81,099.12 : x
  2. Step 2: Convert to fraction form
    141,488/195,281.17 = 81,099.12/x
  3. Step 3: Cross multiply
    141,488x = 195,281.17 × 81,099.12
  4. Step 4: Simplify right side
    141,488x = 15,837,131,039.57
  5. Step 5: Solve for x
    x = 15,837,131,039.57/141,488
  6. Step 6: Final answer
    x = 111,932.68

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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.