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Finding the Fourth Proportional to 79,137, 118,704.15 and 19,972.24

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Solution

The fourth proportional to 79,137, 118,704.15 and 19,972.24 is: 29,958.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,137 : 118,704.15 = 19,972.24 : x
  2. Step 2: Convert to fraction form
    79,137/118,704.15 = 19,972.24/x
  3. Step 3: Cross multiply
    79,137x = 118,704.15 × 19,972.24
  4. Step 4: Simplify right side
    79,137x = 2,370,787,476.04
  5. Step 5: Solve for x
    x = 2,370,787,476.04/79,137
  6. Step 6: Final answer
    x = 29,958.02

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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.