Home / 124,786.78-172,205.34-68,198.14

Finding the Fourth Proportional to 124,786.78, 172,205.34 and 68,198.14

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Solution

The fourth proportional to 124,786.78, 172,205.34 and 68,198.14 is: 94,113.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,786.78 : 172,205.34 = 68,198.14 : x
  2. Step 2: Convert to fraction form
    124,786.78/172,205.34 = 68,198.14/x
  3. Step 3: Cross multiply
    124,786.78x = 172,205.34 × 68,198.14
  4. Step 4: Simplify right side
    124,786.78x = 11,744,083,886.07
  5. Step 5: Solve for x
    x = 11,744,083,886.07/124,786.78
  6. Step 6: Final answer
    x = 94,113.21

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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.