Home / 149,742.30-206,645.08-81,760.64

Finding the Fourth Proportional to 149,742.30, 206,645.08 and 81,760.64

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Solution

The fourth proportional to 149,742.30, 206,645.08 and 81,760.64 is: 112,830.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,742.30 : 206,645.08 = 81,760.64 : x
  2. Step 2: Convert to fraction form
    149,742.30/206,645.08 = 81,760.64/x
  3. Step 3: Cross multiply
    149,742.30x = 206,645.08 × 81,760.64
  4. Step 4: Simplify right side
    149,742.30x = 16,895,433,993.65
  5. Step 5: Solve for x
    x = 16,895,433,993.65/149,742.30
  6. Step 6: Final answer
    x = 112,830.07

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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.