Home / 99,909.43-149,920.80-36,721.33

Finding the Fourth Proportional to 99,909.43, 149,920.80 and 36,721.33

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Solution

The fourth proportional to 99,909.43, 149,920.80 and 36,721.33 is: 55,102.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,909.43 : 149,920.80 = 36,721.33 : x
  2. Step 2: Convert to fraction form
    99,909.43/149,920.80 = 36,721.33/x
  3. Step 3: Cross multiply
    99,909.43x = 149,920.80 × 36,721.33
  4. Step 4: Simplify right side
    99,909.43x = 5,505,291,170.66
  5. Step 5: Solve for x
    x = 5,505,291,170.66/99,909.43
  6. Step 6: Final answer
    x = 55,102.82

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.