Home / 165,658.38-248,138.45-75,776.78

Finding the Fourth Proportional to 165,658.38, 248,138.45 and 75,776.78

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Solution

The fourth proportional to 165,658.38, 248,138.45 and 75,776.78 is: 113,505.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,658.38 : 248,138.45 = 75,776.78 : x
  2. Step 2: Convert to fraction form
    165,658.38/248,138.45 = 75,776.78/x
  3. Step 3: Cross multiply
    165,658.38x = 248,138.45 × 75,776.78
  4. Step 4: Simplify right side
    165,658.38x = 18,803,132,735.19
  5. Step 5: Solve for x
    x = 18,803,132,735.19/165,658.38
  6. Step 6: Final answer
    x = 113,505.47

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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.