Home / 115,150.54-158,908.08-66,761.86

Finding the Fourth Proportional to 115,150.54, 158,908.08 and 66,761.86

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Solution

The fourth proportional to 115,150.54, 158,908.08 and 66,761.86 is: 92,131.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,150.54 : 158,908.08 = 66,761.86 : x
  2. Step 2: Convert to fraction form
    115,150.54/158,908.08 = 66,761.86/x
  3. Step 3: Cross multiply
    115,150.54x = 158,908.08 × 66,761.86
  4. Step 4: Simplify right side
    115,150.54x = 10,608,998,989.83
  5. Step 5: Solve for x
    x = 10,608,998,989.83/115,150.54
  6. Step 6: Final answer
    x = 92,131.56

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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.