Home / 99,231.28-136,940.10-53,909.59

Finding the Fourth Proportional to 99,231.28, 136,940.10 and 53,909.59

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Solution

The fourth proportional to 99,231.28, 136,940.10 and 53,909.59 is: 74,395.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,231.28 : 136,940.10 = 53,909.59 : x
  2. Step 2: Convert to fraction form
    99,231.28/136,940.10 = 53,909.59/x
  3. Step 3: Cross multiply
    99,231.28x = 136,940.10 × 53,909.59
  4. Step 4: Simplify right side
    99,231.28x = 7,382,384,645.56
  5. Step 5: Solve for x
    x = 7,382,384,645.56/99,231.28
  6. Step 6: Final answer
    x = 74,395.74

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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.