Home / 82,002.10-122,711.55-75,003.70

Finding the Fourth Proportional to 82,002.10, 122,711.55 and 75,003.70

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Solution

The fourth proportional to 82,002.10, 122,711.55 and 75,003.70 is: 112,238.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,002.10 : 122,711.55 = 75,003.70 : x
  2. Step 2: Convert to fraction form
    82,002.10/122,711.55 = 75,003.70/x
  3. Step 3: Cross multiply
    82,002.10x = 122,711.55 × 75,003.70
  4. Step 4: Simplify right side
    82,002.10x = 9,203,820,282.74
  5. Step 5: Solve for x
    x = 9,203,820,282.74/82,002.10
  6. Step 6: Final answer
    x = 112,238.84

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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.