Home / 121,591.20-167,798.50-67,143.22

Finding the Fourth Proportional to 121,591.20, 167,798.50 and 67,143.22

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Solution

The fourth proportional to 121,591.20, 167,798.50 and 67,143.22 is: 92,659.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,591.20 : 167,798.50 = 67,143.22 : x
  2. Step 2: Convert to fraction form
    121,591.20/167,798.50 = 67,143.22/x
  3. Step 3: Cross multiply
    121,591.20x = 167,798.50 × 67,143.22
  4. Step 4: Simplify right side
    121,591.20x = 11,266,531,601.17
  5. Step 5: Solve for x
    x = 11,266,531,601.17/121,591.20
  6. Step 6: Final answer
    x = 92,659.10

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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.