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Finding the Fourth Proportional to 123,361.74, 170,237.78 and 69,649.02

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Solution

The fourth proportional to 123,361.74, 170,237.78 and 69,649.02 is: 96,114.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,361.74 : 170,237.78 = 69,649.02 : x
  2. Step 2: Convert to fraction form
    123,361.74/170,237.78 = 69,649.02/x
  3. Step 3: Cross multiply
    123,361.74x = 170,237.78 × 69,649.02
  4. Step 4: Simplify right side
    123,361.74x = 11,856,894,195.73
  5. Step 5: Solve for x
    x = 11,856,894,195.73/123,361.74
  6. Step 6: Final answer
    x = 96,114.84

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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.