Home / 124,713.78-172,161.66-79,453.82

Finding the Fourth Proportional to 124,713.78, 172,161.66 and 79,453.82

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Solution

The fourth proportional to 124,713.78, 172,161.66 and 79,453.82 is: 109,682.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,713.78 : 172,161.66 = 79,453.82 : x
  2. Step 2: Convert to fraction form
    124,713.78/172,161.66 = 79,453.82/x
  3. Step 3: Cross multiply
    124,713.78x = 172,161.66 × 79,453.82
  4. Step 4: Simplify right side
    124,713.78x = 13,678,901,544.54
  5. Step 5: Solve for x
    x = 13,678,901,544.54/124,713.78
  6. Step 6: Final answer
    x = 109,682.36

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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.