Home / 149,406.83-206,175.41-81,422.35

Finding the Fourth Proportional to 149,406.83, 206,175.41 and 81,422.35

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Solution

The fourth proportional to 149,406.83, 206,175.41 and 81,422.35 is: 112,359.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,406.83 : 206,175.41 = 81,422.35 : x
  2. Step 2: Convert to fraction form
    149,406.83/206,175.41 = 81,422.35/x
  3. Step 3: Cross multiply
    149,406.83x = 206,175.41 × 81,422.35
  4. Step 4: Simplify right side
    149,406.83x = 16,787,286,082.53
  5. Step 5: Solve for x
    x = 16,787,286,082.53/149,406.83
  6. Step 6: Final answer
    x = 112,359.56

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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.