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Finding the Fourth Proportional to 79,511.60, 119,267.40 and 74,262.80

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Solution

The fourth proportional to 79,511.60, 119,267.40 and 74,262.80 is: 111,394.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,511.60 : 119,267.40 = 74,262.80 : x
  2. Step 2: Convert to fraction form
    79,511.60/119,267.40 = 74,262.80/x
  3. Step 3: Cross multiply
    79,511.60x = 119,267.40 × 74,262.80
  4. Step 4: Simplify right side
    79,511.60x = 8,857,131,072.72
  5. Step 5: Solve for x
    x = 8,857,131,072.72/79,511.60
  6. Step 6: Final answer
    x = 111,394.20

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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.