Home / 150,161.78-207,133.16-99,174.61

Finding the Fourth Proportional to 150,161.78, 207,133.16 and 99,174.61

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Solution

The fourth proportional to 150,161.78, 207,133.16 and 99,174.61 is: 136,801.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    150,161.78 : 207,133.16 = 99,174.61 : x
  2. Step 2: Convert to fraction form
    150,161.78/207,133.16 = 99,174.61/x
  3. Step 3: Cross multiply
    150,161.78x = 207,133.16 × 99,174.61
  4. Step 4: Simplify right side
    150,161.78x = 20,542,350,361.07
  5. Step 5: Solve for x
    x = 20,542,350,361.07/150,161.78
  6. Step 6: Final answer
    x = 136,801.46

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.