Home / 86,427,099.20-129,640,648.80-71,497,179.20

Finding the Fourth Proportional to 86,427,099.20, 129,640,648.80 and 71,497,179.20

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Solution

The fourth proportional to 86,427,099.20, 129,640,648.80 and 71,497,179.20 is: 107,245,768.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,427,099.20 : 129,640,648.80 = 71,497,179.20 : x
  2. Step 2: Convert to fraction form
    86,427,099.20/129,640,648.80 = 71,497,179.20/x
  3. Step 3: Cross multiply
    86,427,099.20x = 129,640,648.80 × 71,497,179.20
  4. Step 4: Simplify right side
    86,427,099.20x = 9,268,940,698,857,866
  5. Step 5: Solve for x
    x = 9,268,940,698,857,866/86,427,099.20
  6. Step 6: Final answer
    x = 107,245,768.80

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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.