Home / 129,193.85-193,790.78-40,454.30

Finding the Fourth Proportional to 129,193.85, 193,790.78 and 40,454.30

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Solution

The fourth proportional to 129,193.85, 193,790.78 and 40,454.30 is: 60,681.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,193.85 : 193,790.78 = 40,454.30 : x
  2. Step 2: Convert to fraction form
    129,193.85/193,790.78 = 40,454.30/x
  3. Step 3: Cross multiply
    129,193.85x = 193,790.78 × 40,454.30
  4. Step 4: Simplify right side
    129,193.85x = 7,839,669,180.13
  5. Step 5: Solve for x
    x = 7,839,669,180.13/129,193.85
  6. Step 6: Final answer
    x = 60,681.44

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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.