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Finding the Fourth Proportional to 99,307.30, 136,912.40 and 82,248.70

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Solution

The fourth proportional to 99,307.30, 136,912.40 and 82,248.70 is: 113,394.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,307.30 : 136,912.40 = 82,248.70 : x
  2. Step 2: Convert to fraction form
    99,307.30/136,912.40 = 82,248.70/x
  3. Step 3: Cross multiply
    99,307.30x = 136,912.40 × 82,248.70
  4. Step 4: Simplify right side
    99,307.30x = 11,260,866,913.88
  5. Step 5: Solve for x
    x = 11,260,866,913.88/99,307.30
  6. Step 6: Final answer
    x = 113,394.15

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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.