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Finding the Fourth Proportional to 99,307.80, 149,019.30 and 36,984.60

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Solution

The fourth proportional to 99,307.80, 149,019.30 and 36,984.60 is: 55,498.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,307.80 : 149,019.30 = 36,984.60 : x
  2. Step 2: Convert to fraction form
    99,307.80/149,019.30 = 36,984.60/x
  3. Step 3: Cross multiply
    99,307.80x = 149,019.30 × 36,984.60
  4. Step 4: Simplify right side
    99,307.80x = 5,511,419,202.78
  5. Step 5: Solve for x
    x = 5,511,419,202.78/99,307.80
  6. Step 6: Final answer
    x = 55,498.35

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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.