Home / 100,645.20-138,869.64-60,348.24

Finding the Fourth Proportional to 100,645.20, 138,869.64 and 60,348.24

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Solution

The fourth proportional to 100,645.20, 138,869.64 and 60,348.24 is: 83,268.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,645.20 : 138,869.64 = 60,348.24 : x
  2. Step 2: Convert to fraction form
    100,645.20/138,869.64 = 60,348.24/x
  3. Step 3: Cross multiply
    100,645.20x = 138,869.64 × 60,348.24
  4. Step 4: Simplify right side
    100,645.20x = 8,380,538,363.43
  5. Step 5: Solve for x
    x = 8,380,538,363.43/100,645.20
  6. Step 6: Final answer
    x = 83,268.14

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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.