Home / 121,516.40-167,688.69-66,323.61

Finding the Fourth Proportional to 121,516.40, 167,688.69 and 66,323.61

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Solution

The fourth proportional to 121,516.40, 167,688.69 and 66,323.61 is: 91,524.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,516.40 : 167,688.69 = 66,323.61 : x
  2. Step 2: Convert to fraction form
    121,516.40/167,688.69 = 66,323.61/x
  3. Step 3: Cross multiply
    121,516.40x = 167,688.69 × 66,323.61
  4. Step 4: Simplify right side
    121,516.40x = 11,121,719,276.97
  5. Step 5: Solve for x
    x = 11,121,719,276.97/121,516.40
  6. Step 6: Final answer
    x = 91,524.43

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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.