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Finding the Fourth Proportional to 121,754.52, 168,037.11 and 68,050.71

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Solution

The fourth proportional to 121,754.52, 168,037.11 and 68,050.71 is: 93,918.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,754.52 : 168,037.11 = 68,050.71 : x
  2. Step 2: Convert to fraction form
    121,754.52/168,037.11 = 68,050.71/x
  3. Step 3: Cross multiply
    121,754.52x = 168,037.11 × 68,050.71
  4. Step 4: Simplify right side
    121,754.52x = 11,435,044,641.85
  5. Step 5: Solve for x
    x = 11,435,044,641.85/121,754.52
  6. Step 6: Final answer
    x = 93,918.85

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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.