Home / 131,429,772.60-196,766,745.30-80,411,436.60

Finding the Fourth Proportional to 131,429,772.60, 196,766,745.30 and 80,411,436.60

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Solution

The fourth proportional to 131,429,772.60, 196,766,745.30 and 80,411,436.60 is: 120,385,939.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,429,772.60 : 196,766,745.30 = 80,411,436.60 : x
  2. Step 2: Convert to fraction form
    131,429,772.60/196,766,745.30 = 80,411,436.60/x
  3. Step 3: Cross multiply
    131,429,772.60x = 196,766,745.30 × 80,411,436.60
  4. Step 4: Simplify right side
    131,429,772.60x = 15,822,296,664,679,298
  5. Step 5: Solve for x
    x = 15,822,296,664,679,298/131,429,772.60
  6. Step 6: Final answer
    x = 120,385,939.59

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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.