Home / 136,780.44-188,756.28-79,433.86

Finding the Fourth Proportional to 136,780.44, 188,756.28 and 79,433.86

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Solution

The fourth proportional to 136,780.44, 188,756.28 and 79,433.86 is: 109,618.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,780.44 : 188,756.28 = 79,433.86 : x
  2. Step 2: Convert to fraction form
    136,780.44/188,756.28 = 79,433.86/x
  3. Step 3: Cross multiply
    136,780.44x = 188,756.28 × 79,433.86
  4. Step 4: Simplify right side
    136,780.44x = 14,993,639,919.64
  5. Step 5: Solve for x
    x = 14,993,639,919.64/136,780.44
  6. Step 6: Final answer
    x = 109,618.30

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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.