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Finding the Fourth Proportional to 121,471.93, 167,631.51 and 67,755.57

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Solution

The fourth proportional to 121,471.93, 167,631.51 and 67,755.57 is: 93,502.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,471.93 : 167,631.51 = 67,755.57 : x
  2. Step 2: Convert to fraction form
    121,471.93/167,631.51 = 67,755.57/x
  3. Step 3: Cross multiply
    121,471.93x = 167,631.51 × 67,755.57
  4. Step 4: Simplify right side
    121,471.93x = 11,357,968,510.01
  5. Step 5: Solve for x
    x = 11,357,968,510.01/121,471.93
  6. Step 6: Final answer
    x = 93,502.82

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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.