Home / 129,280.75-193,921.12-40,541.40

Finding the Fourth Proportional to 129,280.75, 193,921.12 and 40,541.40

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Solution

The fourth proportional to 129,280.75, 193,921.12 and 40,541.40 is: 60,812.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,280.75 : 193,921.12 = 40,541.40 : x
  2. Step 2: Convert to fraction form
    129,280.75/193,921.12 = 40,541.40/x
  3. Step 3: Cross multiply
    129,280.75x = 193,921.12 × 40,541.40
  4. Step 4: Simplify right side
    129,280.75x = 7,861,833,745.04
  5. Step 5: Solve for x
    x = 7,861,833,745.04/129,280.75
  6. Step 6: Final answer
    x = 60,812.10

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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.