Home / 99,912.24-137,872.28-56,896.13

Finding the Fourth Proportional to 99,912.24, 137,872.28 and 56,896.13

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Solution

The fourth proportional to 99,912.24, 137,872.28 and 56,896.13 is: 78,512.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,912.24 : 137,872.28 = 56,896.13 : x
  2. Step 2: Convert to fraction form
    99,912.24/137,872.28 = 56,896.13/x
  3. Step 3: Cross multiply
    99,912.24x = 137,872.28 × 56,896.13
  4. Step 4: Simplify right side
    99,912.24x = 7,844,398,192.43
  5. Step 5: Solve for x
    x = 7,844,398,192.43/99,912.24
  6. Step 6: Final answer
    x = 78,512.88

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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.