Home / 123,197.65-170,012.38-66,609.03

Finding the Fourth Proportional to 123,197.65, 170,012.38 and 66,609.03

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Solution

The fourth proportional to 123,197.65, 170,012.38 and 66,609.03 is: 91,920.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,197.65 : 170,012.38 = 66,609.03 : x
  2. Step 2: Convert to fraction form
    123,197.65/170,012.38 = 66,609.03/x
  3. Step 3: Cross multiply
    123,197.65x = 170,012.38 × 66,609.03
  4. Step 4: Simplify right side
    123,197.65x = 11,324,359,719.79
  5. Step 5: Solve for x
    x = 11,324,359,719.79/123,197.65
  6. Step 6: Final answer
    x = 91,920.26

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1.5x scale

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.