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Finding the Fourth Proportional to 84,197.53, 126,195.72 and 39,158.11

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Solution

The fourth proportional to 84,197.53, 126,195.72 and 39,158.11 is: 58,690.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,197.53 : 126,195.72 = 39,158.11 : x
  2. Step 2: Convert to fraction form
    84,197.53/126,195.72 = 39,158.11/x
  3. Step 3: Cross multiply
    84,197.53x = 126,195.72 × 39,158.11
  4. Step 4: Simplify right side
    84,197.53x = 4,941,585,885.29
  5. Step 5: Solve for x
    x = 4,941,585,885.29/84,197.53
  6. Step 6: Final answer
    x = 58,690.39

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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.