Home / 82,171.20-123,256.89-19,841.70

Finding the Fourth Proportional to 82,171.20, 123,256.89 and 19,841.70

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Solution

The fourth proportional to 82,171.20, 123,256.89 and 19,841.70 is: 29,762.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,171.20 : 123,256.89 = 19,841.70 : x
  2. Step 2: Convert to fraction form
    82,171.20/123,256.89 = 19,841.70/x
  3. Step 3: Cross multiply
    82,171.20x = 123,256.89 × 19,841.70
  4. Step 4: Simplify right side
    82,171.20x = 2,445,625,618.03
  5. Step 5: Solve for x
    x = 2,445,625,618.03/82,171.20
  6. Step 6: Final answer
    x = 29,762.57

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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.