Home / 123,361.20-170,237.40-66,772.08

Finding the Fourth Proportional to 123,361.20, 170,237.40 and 66,772.08

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Solution

The fourth proportional to 123,361.20, 170,237.40 and 66,772.08 is: 92,144.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,361.20 : 170,237.40 = 66,772.08 : x
  2. Step 2: Convert to fraction form
    123,361.20/170,237.40 = 66,772.08/x
  3. Step 3: Cross multiply
    123,361.20x = 170,237.40 × 66,772.08
  4. Step 4: Simplify right side
    123,361.20x = 11,367,105,291.79
  5. Step 5: Solve for x
    x = 11,367,105,291.79/123,361.20
  6. Step 6: Final answer
    x = 92,144.90

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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.