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Finding the Fourth Proportional to 132,633, 198,954.99 and 39,138.75

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Solution

The fourth proportional to 132,633, 198,954.99 and 39,138.75 is: 58,709.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,633 : 198,954.99 = 39,138.75 : x
  2. Step 2: Convert to fraction form
    132,633/198,954.99 = 39,138.75/x
  3. Step 3: Cross multiply
    132,633x = 198,954.99 × 39,138.75
  4. Step 4: Simplify right side
    132,633x = 7,786,849,614.86
  5. Step 5: Solve for x
    x = 7,786,849,614.86/132,633
  6. Step 6: Final answer
    x = 58,709.75

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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.