Home / 81,465,863.10-122,198,794.65-76,045,164.90

Finding the Fourth Proportional to 81,465,863.10, 122,198,794.65 and 76,045,164.90

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Solution

The fourth proportional to 81,465,863.10, 122,198,794.65 and 76,045,164.90 is: 114,067,747.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,465,863.10 : 122,198,794.65 = 76,045,164.90 : x
  2. Step 2: Convert to fraction form
    81,465,863.10/122,198,794.65 = 76,045,164.90/x
  3. Step 3: Cross multiply
    81,465,863.10x = 122,198,794.65 × 76,045,164.90
  4. Step 4: Simplify right side
    81,465,863.10x = 9,292,627,489,740,488
  5. Step 5: Solve for x
    x = 9,292,627,489,740,488/81,465,863.10
  6. Step 6: Final answer
    x = 114,067,747.35

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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.