Home / 115,244.26-158,931.39-78,998.38

Finding the Fourth Proportional to 115,244.26, 158,931.39 and 78,998.38

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Solution

The fourth proportional to 115,244.26, 158,931.39 and 78,998.38 is: 108,945.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,244.26 : 158,931.39 = 78,998.38 : x
  2. Step 2: Convert to fraction form
    115,244.26/158,931.39 = 78,998.38/x
  3. Step 3: Cross multiply
    115,244.26x = 158,931.39 × 78,998.38
  4. Step 4: Simplify right side
    115,244.26x = 12,555,322,341.15
  5. Step 5: Solve for x
    x = 12,555,322,341.15/115,244.26
  6. Step 6: Final answer
    x = 108,945.32

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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.