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Finding the Fourth Proportional to 100,628.97, 138,806.24 and 59,765.33

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Solution

The fourth proportional to 100,628.97, 138,806.24 and 59,765.33 is: 82,439.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,628.97 : 138,806.24 = 59,765.33 : x
  2. Step 2: Convert to fraction form
    100,628.97/138,806.24 = 59,765.33/x
  3. Step 3: Cross multiply
    100,628.97x = 138,806.24 × 59,765.33
  4. Step 4: Simplify right side
    100,628.97x = 8,295,799,746.80
  5. Step 5: Solve for x
    x = 8,295,799,746.80/100,628.97
  6. Step 6: Final answer
    x = 82,439.48

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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.