Home / 85,140.74-127,514.28-82,188.29

Finding the Fourth Proportional to 85,140.74, 127,514.28 and 82,188.29

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Solution

The fourth proportional to 85,140.74, 127,514.28 and 82,188.29 is: 123,092.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,140.74 : 127,514.28 = 82,188.29 : x
  2. Step 2: Convert to fraction form
    85,140.74/127,514.28 = 82,188.29/x
  3. Step 3: Cross multiply
    85,140.74x = 127,514.28 × 82,188.29
  4. Step 4: Simplify right side
    85,140.74x = 10,480,180,623.78
  5. Step 5: Solve for x
    x = 10,480,180,623.78/85,140.74
  6. Step 6: Final answer
    x = 123,092.43

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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.