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Finding the Fourth Proportional to 99,102.17, 136,703.81 and 63,251.78

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Solution

The fourth proportional to 99,102.17, 136,703.81 and 63,251.78 is: 87,250.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,102.17 : 136,703.81 = 63,251.78 : x
  2. Step 2: Convert to fraction form
    99,102.17/136,703.81 = 63,251.78/x
  3. Step 3: Cross multiply
    99,102.17x = 136,703.81 × 63,251.78
  4. Step 4: Simplify right side
    99,102.17x = 8,646,758,315.50
  5. Step 5: Solve for x
    x = 8,646,758,315.50/99,102.17
  6. Step 6: Final answer
    x = 87,250.95

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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.