Home / 140,578.20-193,999.32-76,918.68

Finding the Fourth Proportional to 140,578.20, 193,999.32 and 76,918.68

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Solution

The fourth proportional to 140,578.20, 193,999.32 and 76,918.68 is: 106,148.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,578.20 : 193,999.32 = 76,918.68 : x
  2. Step 2: Convert to fraction form
    140,578.20/193,999.32 = 76,918.68/x
  3. Step 3: Cross multiply
    140,578.20x = 193,999.32 × 76,918.68
  4. Step 4: Simplify right side
    140,578.20x = 14,922,171,615.30
  5. Step 5: Solve for x
    x = 14,922,171,615.30/140,578.20
  6. Step 6: Final answer
    x = 106,148.55

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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.