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Finding the Fourth Proportional to 99,099.92, 136,712.40 and 63,272

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Solution

The fourth proportional to 99,099.92, 136,712.40 and 63,272 is: 87,286.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,099.92 : 136,712.40 = 63,272 : x
  2. Step 2: Convert to fraction form
    99,099.92/136,712.40 = 63,272/x
  3. Step 3: Cross multiply
    99,099.92x = 136,712.40 × 63,272
  4. Step 4: Simplify right side
    99,099.92x = 8,650,066,972.80
  5. Step 5: Solve for x
    x = 8,650,066,972.80/99,099.92
  6. Step 6: Final answer
    x = 87,286.32

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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.