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Finding the Fourth Proportional to 99,224, 136,937.88 and 54,520.64

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Solution

The fourth proportional to 99,224, 136,937.88 and 54,520.64 is: 75,243.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,224 : 136,937.88 = 54,520.64 : x
  2. Step 2: Convert to fraction form
    99,224/136,937.88 = 54,520.64/x
  3. Step 3: Cross multiply
    99,224x = 136,937.88 × 54,520.64
  4. Step 4: Simplify right side
    99,224x = 7,465,940,857.84
  5. Step 5: Solve for x
    x = 7,465,940,857.84/99,224
  6. Step 6: Final answer
    x = 75,243.30

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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.