Home / 135,377.28-186,919.20-108,666.72

Finding the Fourth Proportional to 135,377.28, 186,919.20 and 108,666.72

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Solution

The fourth proportional to 135,377.28, 186,919.20 and 108,666.72 is: 150,039.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,377.28 : 186,919.20 = 108,666.72 : x
  2. Step 2: Convert to fraction form
    135,377.28/186,919.20 = 108,666.72/x
  3. Step 3: Cross multiply
    135,377.28x = 186,919.20 × 108,666.72
  4. Step 4: Simplify right side
    135,377.28x = 20,311,896,369.02
  5. Step 5: Solve for x
    x = 20,311,896,369.02/135,377.28
  6. Step 6: Final answer
    x = 150,039.18

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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.