Home / 129,945.47-179,326.24-76,231.40

Finding the Fourth Proportional to 129,945.47, 179,326.24 and 76,231.40

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Solution

The fourth proportional to 129,945.47, 179,326.24 and 76,231.40 is: 105,200.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,945.47 : 179,326.24 = 76,231.40 : x
  2. Step 2: Convert to fraction form
    129,945.47/179,326.24 = 76,231.40/x
  3. Step 3: Cross multiply
    129,945.47x = 179,326.24 × 76,231.40
  4. Step 4: Simplify right side
    129,945.47x = 13,670,289,244.73
  5. Step 5: Solve for x
    x = 13,670,289,244.73/129,945.47
  6. Step 6: Final answer
    x = 105,200.20

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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.