Home / 100,383.03-138,526.20-55,060.61

Finding the Fourth Proportional to 100,383.03, 138,526.20 and 55,060.61

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Solution

The fourth proportional to 100,383.03, 138,526.20 and 55,060.61 is: 75,982.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,383.03 : 138,526.20 = 55,060.61 : x
  2. Step 2: Convert to fraction form
    100,383.03/138,526.20 = 55,060.61/x
  3. Step 3: Cross multiply
    100,383.03x = 138,526.20 × 55,060.61
  4. Step 4: Simplify right side
    100,383.03x = 7,627,336,380.35
  5. Step 5: Solve for x
    x = 7,627,336,380.35/100,383.03
  6. Step 6: Final answer
    x = 75,982.33

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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.