Home / 124,977.38-172,468.80-68,388.75

Finding the Fourth Proportional to 124,977.38, 172,468.80 and 68,388.75

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Solution

The fourth proportional to 124,977.38, 172,468.80 and 68,388.75 is: 94,376.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,977.38 : 172,468.80 = 68,388.75 : x
  2. Step 2: Convert to fraction form
    124,977.38/172,468.80 = 68,388.75/x
  3. Step 3: Cross multiply
    124,977.38x = 172,468.80 × 68,388.75
  4. Step 4: Simplify right side
    124,977.38x = 11,794,925,646
  5. Step 5: Solve for x
    x = 11,794,925,646/124,977.38
  6. Step 6: Final answer
    x = 94,376.49

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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.