Home / 79,245,078.80-118,867,618.20-72,190,691.60

Finding the Fourth Proportional to 79,245,078.80, 118,867,618.20 and 72,190,691.60

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Solution

The fourth proportional to 79,245,078.80, 118,867,618.20 and 72,190,691.60 is: 108,286,037.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,245,078.80 : 118,867,618.20 = 72,190,691.60 : x
  2. Step 2: Convert to fraction form
    79,245,078.80/118,867,618.20 = 72,190,691.60/x
  3. Step 3: Cross multiply
    79,245,078.80x = 118,867,618.20 × 72,190,691.60
  4. Step 4: Simplify right side
    79,245,078.80x = 8,581,135,566,702,747
  5. Step 5: Solve for x
    x = 8,581,135,566,702,747/79,245,078.80
  6. Step 6: Final answer
    x = 108,286,037.40

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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.