Home / 136,983.40-189,050.70-80,393.56

Finding the Fourth Proportional to 136,983.40, 189,050.70 and 80,393.56

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Solution

The fourth proportional to 136,983.40, 189,050.70 and 80,393.56 is: 110,951.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,983.40 : 189,050.70 = 80,393.56 : x
  2. Step 2: Convert to fraction form
    136,983.40/189,050.70 = 80,393.56/x
  3. Step 3: Cross multiply
    136,983.40x = 189,050.70 × 80,393.56
  4. Step 4: Simplify right side
    136,983.40x = 15,198,458,793.49
  5. Step 5: Solve for x
    x = 15,198,458,793.49/136,983.40
  6. Step 6: Final answer
    x = 110,951.10

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1.5x scale

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.