Home / 80,403,469.20-120,903,802.20-67,265,139.60

Finding the Fourth Proportional to 80,403,469.20, 120,903,802.20 and 67,265,139.60

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Solution

The fourth proportional to 80,403,469.20, 120,903,802.20 and 67,265,139.60 is: 101,147,515.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,403,469.20 : 120,903,802.20 = 67,265,139.60 : x
  2. Step 2: Convert to fraction form
    80,403,469.20/120,903,802.20 = 67,265,139.60/x
  3. Step 3: Cross multiply
    80,403,469.20x = 120,903,802.20 × 67,265,139.60
  4. Step 4: Simplify right side
    80,403,469.20x = 8,132,611,133,153,787
  5. Step 5: Solve for x
    x = 8,132,611,133,153,787/80,403,469.20
  6. Step 6: Final answer
    x = 101,147,515.33

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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.