Home / 131,819.22-181,909.56-71,388.46

Finding the Fourth Proportional to 131,819.22, 181,909.56 and 71,388.46

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Solution

The fourth proportional to 131,819.22, 181,909.56 and 71,388.46 is: 98,515.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,819.22 : 181,909.56 = 71,388.46 : x
  2. Step 2: Convert to fraction form
    131,819.22/181,909.56 = 71,388.46/x
  3. Step 3: Cross multiply
    131,819.22x = 181,909.56 × 71,388.46
  4. Step 4: Simplify right side
    131,819.22x = 12,986,243,347.68
  5. Step 5: Solve for x
    x = 12,986,243,347.68/131,819.22
  6. Step 6: Final answer
    x = 98,515.55

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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.