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Finding the Fourth Proportional to 84,618,137.20, 126,943,136.88 and 60,296,728.90

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Solution

The fourth proportional to 84,618,137.20, 126,943,136.88 and 60,296,728.90 is: 90,456,445.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,618,137.20 : 126,943,136.88 = 60,296,728.90 : x
  2. Step 2: Convert to fraction form
    84,618,137.20/126,943,136.88 = 60,296,728.90/x
  3. Step 3: Cross multiply
    84,618,137.20x = 126,943,136.88 × 60,296,728.90
  4. Step 4: Simplify right side
    84,618,137.20x = 7,654,255,910,168,951
  5. Step 5: Solve for x
    x = 7,654,255,910,168,951/84,618,137.20
  6. Step 6: Final answer
    x = 90,456,445.43

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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.