Home / 100,189.73-138,261.38-54,867.57

Finding the Fourth Proportional to 100,189.73, 138,261.38 and 54,867.57

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Solution

The fourth proportional to 100,189.73, 138,261.38 and 54,867.57 is: 75,717.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,189.73 : 138,261.38 = 54,867.57 : x
  2. Step 2: Convert to fraction form
    100,189.73/138,261.38 = 54,867.57/x
  3. Step 3: Cross multiply
    100,189.73x = 138,261.38 × 54,867.57
  4. Step 4: Simplify right side
    100,189.73x = 7,586,065,671.11
  5. Step 5: Solve for x
    x = 7,586,065,671.11/100,189.73
  6. Step 6: Final answer
    x = 75,717.00

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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.