Home / 129,249.27-178,499.97-115,160.40

Finding the Fourth Proportional to 129,249.27, 178,499.97 and 115,160.40

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Solution

The fourth proportional to 129,249.27, 178,499.97 and 115,160.40 is: 159,042.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,249.27 : 178,499.97 = 115,160.40 : x
  2. Step 2: Convert to fraction form
    129,249.27/178,499.97 = 115,160.40/x
  3. Step 3: Cross multiply
    129,249.27x = 178,499.97 × 115,160.40
  4. Step 4: Simplify right side
    129,249.27x = 20,556,127,945.19
  5. Step 5: Solve for x
    x = 20,556,127,945.19/129,249.27
  6. Step 6: Final answer
    x = 159,042.51

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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.