Home / 120,042,379.91-165,607,757.28-80,362,694.12

Finding the Fourth Proportional to 120,042,379.91, 165,607,757.28 and 80,362,694.12

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Solution

The fourth proportional to 120,042,379.91, 165,607,757.28 and 80,362,694.12 is: 110,866,558.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,042,379.91 : 165,607,757.28 = 80,362,694.12 : x
  2. Step 2: Convert to fraction form
    120,042,379.91/165,607,757.28 = 80,362,694.12/x
  3. Step 3: Cross multiply
    120,042,379.91x = 165,607,757.28 × 80,362,694.12
  4. Step 4: Simplify right side
    120,042,379.91x = 13,308,685,541,363,804
  5. Step 5: Solve for x
    x = 13,308,685,541,363,804/120,042,379.91
  6. Step 6: Final answer
    x = 110,866,558.55

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.