Home / 129,932.21-179,294.78-72,563.56

Finding the Fourth Proportional to 129,932.21, 179,294.78 and 72,563.56

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Solution

The fourth proportional to 129,932.21, 179,294.78 and 72,563.56 is: 100,131.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,932.21 : 179,294.78 = 72,563.56 : x
  2. Step 2: Convert to fraction form
    129,932.21/179,294.78 = 72,563.56/x
  3. Step 3: Cross multiply
    129,932.21x = 179,294.78 × 72,563.56
  4. Step 4: Simplify right side
    129,932.21x = 13,010,267,205.39
  5. Step 5: Solve for x
    x = 13,010,267,205.39/129,932.21
  6. Step 6: Final answer
    x = 100,131.19

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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.