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Finding the Fourth Proportional to 121,311.74, 167,407.94 and 67,595.61

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Solution

The fourth proportional to 121,311.74, 167,407.94 and 67,595.61 is: 93,280.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,311.74 : 167,407.94 = 67,595.61 : x
  2. Step 2: Convert to fraction form
    121,311.74/167,407.94 = 67,595.61/x
  3. Step 3: Cross multiply
    121,311.74x = 167,407.94 × 67,595.61
  4. Step 4: Simplify right side
    121,311.74x = 11,316,042,619.91
  5. Step 5: Solve for x
    x = 11,316,042,619.91/121,311.74
  6. Step 6: Final answer
    x = 93,280.69

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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.