Home / 105,515.82-158,286.24-66,076.20

Finding the Fourth Proportional to 105,515.82, 158,286.24 and 66,076.20

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Solution

The fourth proportional to 105,515.82, 158,286.24 and 66,076.20 is: 99,122.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,515.82 : 158,286.24 = 66,076.20 : x
  2. Step 2: Convert to fraction form
    105,515.82/158,286.24 = 66,076.20/x
  3. Step 3: Cross multiply
    105,515.82x = 158,286.24 × 66,076.20
  4. Step 4: Simplify right side
    105,515.82x = 10,458,953,251.49
  5. Step 5: Solve for x
    x = 10,458,953,251.49/105,515.82
  6. Step 6: Final answer
    x = 99,122.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.