Home / 100,261.90-150,393.70-80,221.73

Finding the Fourth Proportional to 100,261.90, 150,393.70 and 80,221.73

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Solution

The fourth proportional to 100,261.90, 150,393.70 and 80,221.73 is: 120,333.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,261.90 : 150,393.70 = 80,221.73 : x
  2. Step 2: Convert to fraction form
    100,261.90/150,393.70 = 80,221.73/x
  3. Step 3: Cross multiply
    100,261.90x = 150,393.70 × 80,221.73
  4. Step 4: Simplify right side
    100,261.90x = 12,064,841,842.58
  5. Step 5: Solve for x
    x = 12,064,841,842.58/100,261.90
  6. Step 6: Final answer
    x = 120,333.27

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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.