Home / 82,186.20-123,279.30-52,661.70

Finding the Fourth Proportional to 82,186.20, 123,279.30 and 52,661.70

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Solution

The fourth proportional to 82,186.20, 123,279.30 and 52,661.70 is: 78,992.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,186.20 : 123,279.30 = 52,661.70 : x
  2. Step 2: Convert to fraction form
    82,186.20/123,279.30 = 52,661.70/x
  3. Step 3: Cross multiply
    82,186.20x = 123,279.30 × 52,661.70
  4. Step 4: Simplify right side
    82,186.20x = 6,492,097,512.81
  5. Step 5: Solve for x
    x = 6,492,097,512.81/82,186.20
  6. Step 6: Final answer
    x = 78,992.55

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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.