Home / 165,728.40-248,722.20-76,992.90

Finding the Fourth Proportional to 165,728.40, 248,722.20 and 76,992.90

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Solution

The fourth proportional to 165,728.40, 248,722.20 and 76,992.90 is: 115,549.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,728.40 : 248,722.20 = 76,992.90 : x
  2. Step 2: Convert to fraction form
    165,728.40/248,722.20 = 76,992.90/x
  3. Step 3: Cross multiply
    165,728.40x = 248,722.20 × 76,992.90
  4. Step 4: Simplify right side
    165,728.40x = 19,149,843,472.38
  5. Step 5: Solve for x
    x = 19,149,843,472.38/165,728.40
  6. Step 6: Final answer
    x = 115,549.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.