Home / 129,249.93-178,277.24-83,846.78

Finding the Fourth Proportional to 129,249.93, 178,277.24 and 83,846.78

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Solution

The fourth proportional to 129,249.93, 178,277.24 and 83,846.78 is: 115,651.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,249.93 : 178,277.24 = 83,846.78 : x
  2. Step 2: Convert to fraction form
    129,249.93/178,277.24 = 83,846.78/x
  3. Step 3: Cross multiply
    129,249.93x = 178,277.24 × 83,846.78
  4. Step 4: Simplify right side
    129,249.93x = 14,947,971,210.67
  5. Step 5: Solve for x
    x = 14,947,971,210.67/129,249.93
  6. Step 6: Final answer
    x = 115,651.68

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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.