Home / 129,577.07-178,822.41-75,879.38

Finding the Fourth Proportional to 129,577.07, 178,822.41 and 75,879.38

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Solution

The fourth proportional to 129,577.07, 178,822.41 and 75,879.38 is: 104,717.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,577.07 : 178,822.41 = 75,879.38 : x
  2. Step 2: Convert to fraction form
    129,577.07/178,822.41 = 75,879.38/x
  3. Step 3: Cross multiply
    129,577.07x = 178,822.41 × 75,879.38
  4. Step 4: Simplify right side
    129,577.07x = 13,568,933,600.91
  5. Step 5: Solve for x
    x = 13,568,933,600.91/129,577.07
  6. Step 6: Final answer
    x = 104,717.09

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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.