Home / 140,315.76-193,625.64-76,640.04

Finding the Fourth Proportional to 140,315.76, 193,625.64 and 76,640.04

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Solution

The fourth proportional to 140,315.76, 193,625.64 and 76,640.04 is: 105,757.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,315.76 : 193,625.64 = 76,640.04 : x
  2. Step 2: Convert to fraction form
    140,315.76/193,625.64 = 76,640.04/x
  3. Step 3: Cross multiply
    140,315.76x = 193,625.64 × 76,640.04
  4. Step 4: Simplify right side
    140,315.76x = 14,839,476,794.63
  5. Step 5: Solve for x
    x = 14,839,476,794.63/140,315.76
  6. Step 6: Final answer
    x = 105,757.73

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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.