Home / 100,223.20-138,310.25-57,201.83

Finding the Fourth Proportional to 100,223.20, 138,310.25 and 57,201.83

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Solution

The fourth proportional to 100,223.20, 138,310.25 and 57,201.83 is: 78,939.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,223.20 : 138,310.25 = 57,201.83 : x
  2. Step 2: Convert to fraction form
    100,223.20/138,310.25 = 57,201.83/x
  3. Step 3: Cross multiply
    100,223.20x = 138,310.25 × 57,201.83
  4. Step 4: Simplify right side
    100,223.20x = 7,911,599,407.76
  5. Step 5: Solve for x
    x = 7,911,599,407.76/100,223.20
  6. Step 6: Final answer
    x = 78,939.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.