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Finding the Fourth Proportional to 84,219,627.80, 126,329,441.70 and 84,219,627.80

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Solution

The fourth proportional to 84,219,627.80, 126,329,441.70 and 84,219,627.80 is: 126,329,441.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,219,627.80 : 126,329,441.70 = 84,219,627.80 : x
  2. Step 2: Convert to fraction form
    84,219,627.80/126,329,441.70 = 84,219,627.80/x
  3. Step 3: Cross multiply
    84,219,627.80x = 126,329,441.70 × 84,219,627.80
  4. Step 4: Simplify right side
    84,219,627.80x = 10,639,418,560,155,800
  5. Step 5: Solve for x
    x = 10,639,418,560,155,800/84,219,627.80
  6. Step 6: Final answer
    x = 126,329,441.70

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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.