Home / 115,245.26-158,932.77-78,999.38

Finding the Fourth Proportional to 115,245.26, 158,932.77 and 78,999.38

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Solution

The fourth proportional to 115,245.26, 158,932.77 and 78,999.38 is: 108,946.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,245.26 : 158,932.77 = 78,999.38 : x
  2. Step 2: Convert to fraction form
    115,245.26/158,932.77 = 78,999.38/x
  3. Step 3: Cross multiply
    115,245.26x = 158,932.77 × 78,999.38
  4. Step 4: Simplify right side
    115,245.26x = 12,555,590,291.68
  5. Step 5: Solve for x
    x = 12,555,590,291.68/115,245.26
  6. Step 6: Final answer
    x = 108,946.70

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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.