Home / 113,821.20-170,731.80-80,578.80

Finding the Fourth Proportional to 113,821.20, 170,731.80 and 80,578.80

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Solution

The fourth proportional to 113,821.20, 170,731.80 and 80,578.80 is: 120,868.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,821.20 : 170,731.80 = 80,578.80 : x
  2. Step 2: Convert to fraction form
    113,821.20/170,731.80 = 80,578.80/x
  3. Step 3: Cross multiply
    113,821.20x = 170,731.80 × 80,578.80
  4. Step 4: Simplify right side
    113,821.20x = 13,757,363,565.84
  5. Step 5: Solve for x
    x = 13,757,363,565.84/113,821.20
  6. Step 6: Final answer
    x = 120,868.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.