Home / 120,015,941.88-165,588,393.42-75,366,725.88

Finding the Fourth Proportional to 120,015,941.88, 165,588,393.42 and 75,366,725.88

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Solution

The fourth proportional to 120,015,941.88, 165,588,393.42 and 75,366,725.88 is: 103,984,977.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,015,941.88 : 165,588,393.42 = 75,366,725.88 : x
  2. Step 2: Convert to fraction form
    120,015,941.88/165,588,393.42 = 75,366,725.88/x
  3. Step 3: Cross multiply
    120,015,941.88x = 165,588,393.42 × 75,366,725.88
  4. Step 4: Simplify right side
    120,015,941.88x = 12,479,855,055,794,734
  5. Step 5: Solve for x
    x = 12,479,855,055,794,734/120,015,941.88
  6. Step 6: Final answer
    x = 103,984,977.83

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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.