Home / 81,607,206.60-122,477,732.10-80,969,477.40

Finding the Fourth Proportional to 81,607,206.60, 122,477,732.10 and 80,969,477.40

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Solution

The fourth proportional to 81,607,206.60, 122,477,732.10 and 80,969,477.40 is: 121,520,615.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,607,206.60 : 122,477,732.10 = 80,969,477.40 : x
  2. Step 2: Convert to fraction form
    81,607,206.60/122,477,732.10 = 80,969,477.40/x
  3. Step 3: Cross multiply
    81,607,206.60x = 122,477,732.10 × 80,969,477.40
  4. Step 4: Simplify right side
    81,607,206.60x = 9,916,957,961,274,204
  5. Step 5: Solve for x
    x = 9,916,957,961,274,204/81,607,206.60
  6. Step 6: Final answer
    x = 121,520,615.33

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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.