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Finding the Fourth Proportional to 138,820.60, 208,169.34 and 63,922.60

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Solution

The fourth proportional to 138,820.60, 208,169.34 and 63,922.60 is: 95,855.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,820.60 : 208,169.34 = 63,922.60 : x
  2. Step 2: Convert to fraction form
    138,820.60/208,169.34 = 63,922.60/x
  3. Step 3: Cross multiply
    138,820.60x = 208,169.34 × 63,922.60
  4. Step 4: Simplify right side
    138,820.60x = 13,306,725,453.08
  5. Step 5: Solve for x
    x = 13,306,725,453.08/138,820.60
  6. Step 6: Final answer
    x = 95,855.55

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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.