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Finding the Fourth Proportional to 80,874,098.10, 121,311,147.15 and 80,874,098.10

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Solution

The fourth proportional to 80,874,098.10, 121,311,147.15 and 80,874,098.10 is: 121,311,147.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,874,098.10 : 121,311,147.15 = 80,874,098.10 : x
  2. Step 2: Convert to fraction form
    80,874,098.10/121,311,147.15 = 80,874,098.10/x
  3. Step 3: Cross multiply
    80,874,098.10x = 121,311,147.15 × 80,874,098.10
  4. Step 4: Simplify right side
    80,874,098.10x = 9,810,929,615,232,636
  5. Step 5: Solve for x
    x = 9,810,929,615,232,636/80,874,098.10
  6. Step 6: Final answer
    x = 121,311,147.15

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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.