Home / 81,408,110.30-122,112,165.45-80,841,239.90

Finding the Fourth Proportional to 81,408,110.30, 122,112,165.45 and 80,841,239.90

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Solution

The fourth proportional to 81,408,110.30, 122,112,165.45 and 80,841,239.90 is: 121,261,859.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,408,110.30 : 122,112,165.45 = 80,841,239.90 : x
  2. Step 2: Convert to fraction form
    81,408,110.30/122,112,165.45 = 80,841,239.90/x
  3. Step 3: Cross multiply
    81,408,110.30x = 122,112,165.45 × 80,841,239.90
  4. Step 4: Simplify right side
    81,408,110.30x = 9,871,698,861,851,942
  5. Step 5: Solve for x
    x = 9,871,698,861,851,942/81,408,110.30
  6. Step 6: Final answer
    x = 121,261,859.85

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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.