Home / 135,330.83-186,743.90-80,872.20

Finding the Fourth Proportional to 135,330.83, 186,743.90 and 80,872.20

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Solution

The fourth proportional to 135,330.83, 186,743.90 and 80,872.20 is: 111,596.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,330.83 : 186,743.90 = 80,872.20 : x
  2. Step 2: Convert to fraction form
    135,330.83/186,743.90 = 80,872.20/x
  3. Step 3: Cross multiply
    135,330.83x = 186,743.90 × 80,872.20
  4. Step 4: Simplify right side
    135,330.83x = 15,102,389,028.31
  5. Step 5: Solve for x
    x = 15,102,389,028.31/135,330.83
  6. Step 6: Final answer
    x = 111,596.07

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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.