Home / 80,640,160.80-120,960,241.20-73,625,139.60

Finding the Fourth Proportional to 80,640,160.80, 120,960,241.20 and 73,625,139.60

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Solution

The fourth proportional to 80,640,160.80, 120,960,241.20 and 73,625,139.60 is: 110,437,709.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,640,160.80 : 120,960,241.20 = 73,625,139.60 : x
  2. Step 2: Convert to fraction form
    80,640,160.80/120,960,241.20 = 73,625,139.60/x
  3. Step 3: Cross multiply
    80,640,160.80x = 120,960,241.20 × 73,625,139.60
  4. Step 4: Simplify right side
    80,640,160.80x = 8,905,714,644,399,671
  5. Step 5: Solve for x
    x = 8,905,714,644,399,671/80,640,160.80
  6. Step 6: Final answer
    x = 110,437,709.40

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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.