Home / 136,598.20-188,500.57-79,238.66

Finding the Fourth Proportional to 136,598.20, 188,500.57 and 79,238.66

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Solution

The fourth proportional to 136,598.20, 188,500.57 and 79,238.66 is: 109,346.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,598.20 : 188,500.57 = 79,238.66 : x
  2. Step 2: Convert to fraction form
    136,598.20/188,500.57 = 79,238.66/x
  3. Step 3: Cross multiply
    136,598.20x = 188,500.57 × 79,238.66
  4. Step 4: Simplify right side
    136,598.20x = 14,936,531,435.44
  5. Step 5: Solve for x
    x = 14,936,531,435.44/136,598.20
  6. Step 6: Final answer
    x = 109,346.48

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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.