Home / 129,853.80-179,199.54-76,170.60

Finding the Fourth Proportional to 129,853.80, 179,199.54 and 76,170.60

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Solution

The fourth proportional to 129,853.80, 179,199.54 and 76,170.60 is: 105,116.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,853.80 : 179,199.54 = 76,170.60 : x
  2. Step 2: Convert to fraction form
    129,853.80/179,199.54 = 76,170.60/x
  3. Step 3: Cross multiply
    129,853.80x = 179,199.54 × 76,170.60
  4. Step 4: Simplify right side
    129,853.80x = 13,649,736,481.52
  5. Step 5: Solve for x
    x = 13,649,736,481.52/129,853.80
  6. Step 6: Final answer
    x = 105,116.19

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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.