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Finding the Fourth Proportional to 120,015.52, 165,631.32 and 69,044.80

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Solution

The fourth proportional to 120,015.52, 165,631.32 and 69,044.80 is: 95,287.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,015.52 : 165,631.32 = 69,044.80 : x
  2. Step 2: Convert to fraction form
    120,015.52/165,631.32 = 69,044.80/x
  3. Step 3: Cross multiply
    120,015.52x = 165,631.32 × 69,044.80
  4. Step 4: Simplify right side
    120,015.52x = 11,435,981,363.14
  5. Step 5: Solve for x
    x = 11,435,981,363.14/120,015.52
  6. Step 6: Final answer
    x = 95,287.52

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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.