Home / 129,358.18-194,069.56-45,119.55

Finding the Fourth Proportional to 129,358.18, 194,069.56 and 45,119.55

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Solution

The fourth proportional to 129,358.18, 194,069.56 and 45,119.55 is: 67,690.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,358.18 : 194,069.56 = 45,119.55 : x
  2. Step 2: Convert to fraction form
    129,358.18/194,069.56 = 45,119.55/x
  3. Step 3: Cross multiply
    129,358.18x = 194,069.56 × 45,119.55
  4. Step 4: Simplify right side
    129,358.18x = 8,756,331,215.90
  5. Step 5: Solve for x
    x = 8,756,331,215.90/129,358.18
  6. Step 6: Final answer
    x = 67,690.59

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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.