Home / 136,984.40-189,052.08-80,394.56

Finding the Fourth Proportional to 136,984.40, 189,052.08 and 80,394.56

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Solution

The fourth proportional to 136,984.40, 189,052.08 and 80,394.56 is: 110,952.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,984.40 : 189,052.08 = 80,394.56 : x
  2. Step 2: Convert to fraction form
    136,984.40/189,052.08 = 80,394.56/x
  3. Step 3: Cross multiply
    136,984.40x = 189,052.08 × 80,394.56
  4. Step 4: Simplify right side
    136,984.40x = 15,198,758,788.68
  5. Step 5: Solve for x
    x = 15,198,758,788.68/136,984.40
  6. Step 6: Final answer
    x = 110,952.48

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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.