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Finding the Fourth Proportional to 99,158.68, 136,788.22 and 63,311

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Solution

The fourth proportional to 99,158.68, 136,788.22 and 63,311 is: 87,336.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,158.68 : 136,788.22 = 63,311 : x
  2. Step 2: Convert to fraction form
    99,158.68/136,788.22 = 63,311/x
  3. Step 3: Cross multiply
    99,158.68x = 136,788.22 × 63,311
  4. Step 4: Simplify right side
    99,158.68x = 8,660,198,996.42
  5. Step 5: Solve for x
    x = 8,660,198,996.42/99,158.68
  6. Step 6: Final answer
    x = 87,336.77

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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.