Home / 129,278.76-193,920.57-40,530.30

Finding the Fourth Proportional to 129,278.76, 193,920.57 and 40,530.30

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Solution

The fourth proportional to 129,278.76, 193,920.57 and 40,530.30 is: 60,796.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,278.76 : 193,920.57 = 40,530.30 : x
  2. Step 2: Convert to fraction form
    129,278.76/193,920.57 = 40,530.30/x
  3. Step 3: Cross multiply
    129,278.76x = 193,920.57 × 40,530.30
  4. Step 4: Simplify right side
    129,278.76x = 7,859,658,878.27
  5. Step 5: Solve for x
    x = 7,859,658,878.27/129,278.76
  6. Step 6: Final answer
    x = 60,796.21

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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.