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Finding the Fourth Proportional to 99,144.90, 148,717.62 and 69,694.56

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Solution

The fourth proportional to 99,144.90, 148,717.62 and 69,694.56 is: 104,542.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,144.90 : 148,717.62 = 69,694.56 : x
  2. Step 2: Convert to fraction form
    99,144.90/148,717.62 = 69,694.56/x
  3. Step 3: Cross multiply
    99,144.90x = 148,717.62 × 69,694.56
  4. Step 4: Simplify right side
    99,144.90x = 10,364,809,090.15
  5. Step 5: Solve for x
    x = 10,364,809,090.15/99,144.90
  6. Step 6: Final answer
    x = 104,542.03

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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.