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Finding the Fourth Proportional to 121,042, 167,037.96 and 68,050

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Solution

The fourth proportional to 121,042, 167,037.96 and 68,050 is: 93,909

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,042 : 167,037.96 = 68,050 : x
  2. Step 2: Convert to fraction form
    121,042/167,037.96 = 68,050/x
  3. Step 3: Cross multiply
    121,042x = 167,037.96 × 68,050
  4. Step 4: Simplify right side
    121,042x = 11,366,933,178
  5. Step 5: Solve for x
    x = 11,366,933,178/121,042
  6. Step 6: Final answer
    x = 93,909

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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.