Home / 99,120.69-136,724.33-58,805.91

Finding the Fourth Proportional to 99,120.69, 136,724.33 and 58,805.91

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Solution

The fourth proportional to 99,120.69, 136,724.33 and 58,805.91 is: 81,115.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,120.69 : 136,724.33 = 58,805.91 : x
  2. Step 2: Convert to fraction form
    99,120.69/136,724.33 = 58,805.91/x
  3. Step 3: Cross multiply
    99,120.69x = 136,724.33 × 58,805.91
  4. Step 4: Simplify right side
    99,120.69x = 8,040,198,644.79
  5. Step 5: Solve for x
    x = 8,040,198,644.79/99,120.69
  6. Step 6: Final answer
    x = 81,115.24

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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.