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Finding the Fourth Proportional to 121,470.61, 167,629.37 and 67,755.61

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Solution

The fourth proportional to 121,470.61, 167,629.37 and 67,755.61 is: 93,502.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,470.61 : 167,629.37 = 67,755.61 : x
  2. Step 2: Convert to fraction form
    121,470.61/167,629.37 = 67,755.61/x
  3. Step 3: Cross multiply
    121,470.61x = 167,629.37 × 67,755.61
  4. Step 4: Simplify right side
    121,470.61x = 11,357,831,132.17
  5. Step 5: Solve for x
    x = 11,357,831,132.17/121,470.61
  6. Step 6: Final answer
    x = 93,502.71

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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.