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Finding the Fourth Proportional to 79,198.68, 118,787.04 and 20,030.76

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Solution

The fourth proportional to 79,198.68, 118,787.04 and 20,030.76 is: 30,043.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,198.68 : 118,787.04 = 20,030.76 : x
  2. Step 2: Convert to fraction form
    79,198.68/118,787.04 = 20,030.76/x
  3. Step 3: Cross multiply
    79,198.68x = 118,787.04 × 20,030.76
  4. Step 4: Simplify right side
    79,198.68x = 2,379,394,689.35
  5. Step 5: Solve for x
    x = 2,379,394,689.35/79,198.68
  6. Step 6: Final answer
    x = 30,043.36

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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.