Home / 85,139.09-127,725.41-25,168.61

Finding the Fourth Proportional to 85,139.09, 127,725.41 and 25,168.61

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Solution

The fourth proportional to 85,139.09, 127,725.41 and 25,168.61 is: 37,757.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,139.09 : 127,725.41 = 25,168.61 : x
  2. Step 2: Convert to fraction form
    85,139.09/127,725.41 = 25,168.61/x
  3. Step 3: Cross multiply
    85,139.09x = 127,725.41 × 25,168.61
  4. Step 4: Simplify right side
    85,139.09x = 3,214,671,031.38
  5. Step 5: Solve for x
    x = 3,214,671,031.38/85,139.09
  6. Step 6: Final answer
    x = 37,757.87

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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.