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Finding the Fourth Proportional to 80,643,766.60, 120,797,688.30 and 80,643,766.60

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Solution

The fourth proportional to 80,643,766.60, 120,797,688.30 and 80,643,766.60 is: 120,797,688.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,643,766.60 : 120,797,688.30 = 80,643,766.60 : x
  2. Step 2: Convert to fraction form
    80,643,766.60/120,797,688.30 = 80,643,766.60/x
  3. Step 3: Cross multiply
    80,643,766.60x = 120,797,688.30 × 80,643,766.60
  4. Step 4: Simplify right side
    80,643,766.60x = 9,741,580,581,084,750
  5. Step 5: Solve for x
    x = 9,741,580,581,084,750/80,643,766.60
  6. Step 6: Final answer
    x = 120,797,688.30

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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.