Home / 123,515.51-170,431.97-71,844.03

Finding the Fourth Proportional to 123,515.51, 170,431.97 and 71,844.03

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Solution

The fourth proportional to 123,515.51, 170,431.97 and 71,844.03 is: 99,133.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,515.51 : 170,431.97 = 71,844.03 : x
  2. Step 2: Convert to fraction form
    123,515.51/170,431.97 = 71,844.03/x
  3. Step 3: Cross multiply
    123,515.51x = 170,431.97 × 71,844.03
  4. Step 4: Simplify right side
    123,515.51x = 12,244,519,206.42
  5. Step 5: Solve for x
    x = 12,244,519,206.42/123,515.51
  6. Step 6: Final answer
    x = 99,133.46

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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.