Home / 81,676,735.60-122,160,809.40-73,102,820.80

Finding the Fourth Proportional to 81,676,735.60, 122,160,809.40 and 73,102,820.80

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Solution

The fourth proportional to 81,676,735.60, 122,160,809.40 and 73,102,820.80 is: 109,337,128.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,676,735.60 : 122,160,809.40 = 73,102,820.80 : x
  2. Step 2: Convert to fraction form
    81,676,735.60/122,160,809.40 = 73,102,820.80/x
  3. Step 3: Cross multiply
    81,676,735.60x = 122,160,809.40 × 73,102,820.80
  4. Step 4: Simplify right side
    81,676,735.60x = 8,930,299,758,351,156
  5. Step 5: Solve for x
    x = 8,930,299,758,351,156/81,676,735.60
  6. Step 6: Final answer
    x = 109,337,128.78

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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.