Home / 129,143.87-193,715.85-40,397.74

Finding the Fourth Proportional to 129,143.87, 193,715.85 and 40,397.74

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Solution

The fourth proportional to 129,143.87, 193,715.85 and 40,397.74 is: 60,596.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,143.87 : 193,715.85 = 40,397.74 : x
  2. Step 2: Convert to fraction form
    129,143.87/193,715.85 = 40,397.74/x
  3. Step 3: Cross multiply
    129,143.87x = 193,715.85 × 40,397.74
  4. Step 4: Simplify right side
    129,143.87x = 7,825,682,209.38
  5. Step 5: Solve for x
    x = 7,825,682,209.38/129,143.87
  6. Step 6: Final answer
    x = 60,596.62

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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.