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Finding the Fourth Proportional to 99,644.87, 149,538.38 and 55,307.09

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Solution

The fourth proportional to 99,644.87, 149,538.38 and 55,307.09 is: 83,000.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,644.87 : 149,538.38 = 55,307.09 : x
  2. Step 2: Convert to fraction form
    99,644.87/149,538.38 = 55,307.09/x
  3. Step 3: Cross multiply
    99,644.87x = 149,538.38 × 55,307.09
  4. Step 4: Simplify right side
    99,644.87x = 8,270,531,616.89
  5. Step 5: Solve for x
    x = 8,270,531,616.89/99,644.87
  6. Step 6: Final answer
    x = 83,000.08

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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.