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Finding the Fourth Proportional to 121,604.84, 182,684.04 and 87,974.58

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Solution

The fourth proportional to 121,604.84, 182,684.04 and 87,974.58 is: 132,162.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,604.84 : 182,684.04 = 87,974.58 : x
  2. Step 2: Convert to fraction form
    121,604.84/182,684.04 = 87,974.58/x
  3. Step 3: Cross multiply
    121,604.84x = 182,684.04 × 87,974.58
  4. Step 4: Simplify right side
    121,604.84x = 16,071,551,691.70
  5. Step 5: Solve for x
    x = 16,071,551,691.70/121,604.84
  6. Step 6: Final answer
    x = 132,162.11

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.