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Finding the Fourth Proportional to 121,294.28, 167,374.74 and 89,480.84

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Solution

The fourth proportional to 121,294.28, 167,374.74 and 89,480.84 is: 123,475.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,294.28 : 167,374.74 = 89,480.84 : x
  2. Step 2: Convert to fraction form
    121,294.28/167,374.74 = 89,480.84/x
  3. Step 3: Cross multiply
    121,294.28x = 167,374.74 × 89,480.84
  4. Step 4: Simplify right side
    121,294.28x = 14,976,832,329.98
  5. Step 5: Solve for x
    x = 14,976,832,329.98/121,294.28
  6. Step 6: Final answer
    x = 123,475.17

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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.