Home / 121,631.45-167,850.39-66,440.82

Finding the Fourth Proportional to 121,631.45, 167,850.39 and 66,440.82

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Solution

The fourth proportional to 121,631.45, 167,850.39 and 66,440.82 is: 91,687.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,631.45 : 167,850.39 = 66,440.82 : x
  2. Step 2: Convert to fraction form
    121,631.45/167,850.39 = 66,440.82/x
  3. Step 3: Cross multiply
    121,631.45x = 167,850.39 × 66,440.82
  4. Step 4: Simplify right side
    121,631.45x = 11,152,117,548.92
  5. Step 5: Solve for x
    x = 11,152,117,548.92/121,631.45
  6. Step 6: Final answer
    x = 91,687.78

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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.