Home / 138,899.10-208,223.91-50,131.74

Finding the Fourth Proportional to 138,899.10, 208,223.91 and 50,131.74

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Solution

The fourth proportional to 138,899.10, 208,223.91 and 50,131.74 is: 75,152.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,899.10 : 208,223.91 = 50,131.74 : x
  2. Step 2: Convert to fraction form
    138,899.10/208,223.91 = 50,131.74/x
  3. Step 3: Cross multiply
    138,899.10x = 208,223.91 × 50,131.74
  4. Step 4: Simplify right side
    138,899.10x = 10,438,626,917.90
  5. Step 5: Solve for x
    x = 10,438,626,917.90/138,899.10
  6. Step 6: Final answer
    x = 75,152.59

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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.