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Finding the Fourth Proportional to 75,192.75, 112,789.13 and 19,788.75

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Solution

The fourth proportional to 75,192.75, 112,789.13 and 19,788.75 is: 29,683.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,192.75 : 112,789.13 = 19,788.75 : x
  2. Step 2: Convert to fraction form
    75,192.75/112,789.13 = 19,788.75/x
  3. Step 3: Cross multiply
    75,192.75x = 112,789.13 × 19,788.75
  4. Step 4: Simplify right side
    75,192.75x = 2,231,955,797.34
  5. Step 5: Solve for x
    x = 2,231,955,797.34/75,192.75
  6. Step 6: Final answer
    x = 29,683.13

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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.