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Finding the Fourth Proportional to 112,442, 155,167.88 and 62,139.92

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Solution

The fourth proportional to 112,442, 155,167.88 and 62,139.92 is: 85,751.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,442 : 155,167.88 = 62,139.92 : x
  2. Step 2: Convert to fraction form
    112,442/155,167.88 = 62,139.92/x
  3. Step 3: Cross multiply
    112,442x = 155,167.88 × 62,139.92
  4. Step 4: Simplify right side
    112,442x = 9,642,119,649.77
  5. Step 5: Solve for x
    x = 9,642,119,649.77/112,442
  6. Step 6: Final answer
    x = 85,751.94

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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.