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Finding the Fourth Proportional to 121,480.70, 167,552.96 and 89,205.17

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Solution

The fourth proportional to 121,480.70, 167,552.96 and 89,205.17 is: 123,036.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,480.70 : 167,552.96 = 89,205.17 : x
  2. Step 2: Convert to fraction form
    121,480.70/167,552.96 = 89,205.17/x
  3. Step 3: Cross multiply
    121,480.70x = 167,552.96 × 89,205.17
  4. Step 4: Simplify right side
    121,480.70x = 14,946,588,997.01
  5. Step 5: Solve for x
    x = 14,946,588,997.01/121,480.70
  6. Step 6: Final answer
    x = 123,036.74

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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.