Home / 100,077.14-138,105.23-54,754.56

Finding the Fourth Proportional to 100,077.14, 138,105.23 and 54,754.56

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Solution

The fourth proportional to 100,077.14, 138,105.23 and 54,754.56 is: 75,560.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,077.14 : 138,105.23 = 54,754.56 : x
  2. Step 2: Convert to fraction form
    100,077.14/138,105.23 = 54,754.56/x
  3. Step 3: Cross multiply
    100,077.14x = 138,105.23 × 54,754.56
  4. Step 4: Simplify right side
    100,077.14x = 7,561,890,828.58
  5. Step 5: Solve for x
    x = 7,561,890,828.58/100,077.14
  6. Step 6: Final answer
    x = 75,560.62

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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.