Home / 123,395.51-170,286.53-66,806.88

Finding the Fourth Proportional to 123,395.51, 170,286.53 and 66,806.88

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Solution

The fourth proportional to 123,395.51, 170,286.53 and 66,806.88 is: 92,193.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,395.51 : 170,286.53 = 66,806.88 : x
  2. Step 2: Convert to fraction form
    123,395.51/170,286.53 = 66,806.88/x
  3. Step 3: Cross multiply
    123,395.51x = 170,286.53 × 66,806.88
  4. Step 4: Simplify right side
    123,395.51x = 11,376,311,441.29
  5. Step 5: Solve for x
    x = 11,376,311,441.29/123,395.51
  6. Step 6: Final answer
    x = 92,193.89

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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.