Home / 140,521.74-193,918.59-76,860.78

Finding the Fourth Proportional to 140,521.74, 193,918.59 and 76,860.78

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Solution

The fourth proportional to 140,521.74, 193,918.59 and 76,860.78 is: 106,067.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,521.74 : 193,918.59 = 76,860.78 : x
  2. Step 2: Convert to fraction form
    140,521.74/193,918.59 = 76,860.78/x
  3. Step 3: Cross multiply
    140,521.74x = 193,918.59 × 76,860.78
  4. Step 4: Simplify right side
    140,521.74x = 14,904,734,083.90
  5. Step 5: Solve for x
    x = 14,904,734,083.90/140,521.74
  6. Step 6: Final answer
    x = 106,067.10

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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.