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Finding the Fourth Proportional to 80,648,049.30, 120,972,073.95 and 80,648,049.30

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Solution

The fourth proportional to 80,648,049.30, 120,972,073.95 and 80,648,049.30 is: 120,972,073.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,648,049.30 : 120,972,073.95 = 80,648,049.30 : x
  2. Step 2: Convert to fraction form
    80,648,049.30/120,972,073.95 = 80,648,049.30/x
  3. Step 3: Cross multiply
    80,648,049.30x = 120,972,073.95 × 80,648,049.30
  4. Step 4: Simplify right side
    80,648,049.30x = 9,756,161,783,842,846
  5. Step 5: Solve for x
    x = 9,756,161,783,842,846/80,648,049.30
  6. Step 6: Final answer
    x = 120,972,073.95

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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.