Home / 129,897.75-179,243.07-72,540.26

Finding the Fourth Proportional to 129,897.75, 179,243.07 and 72,540.26

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Solution

The fourth proportional to 129,897.75, 179,243.07 and 72,540.26 is: 100,096.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,897.75 : 179,243.07 = 72,540.26 : x
  2. Step 2: Convert to fraction form
    129,897.75/179,243.07 = 72,540.26/x
  3. Step 3: Cross multiply
    129,897.75x = 179,243.07 × 72,540.26
  4. Step 4: Simplify right side
    129,897.75x = 13,002,338,004.78
  5. Step 5: Solve for x
    x = 13,002,338,004.78/129,897.75
  6. Step 6: Final answer
    x = 100,096.72

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1.5x scale

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.