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Finding the Fourth Proportional to 123,392.64, 170,282.64 and 66,804

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Solution

The fourth proportional to 123,392.64, 170,282.64 and 66,804 is: 92,189.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,392.64 : 170,282.64 = 66,804 : x
  2. Step 2: Convert to fraction form
    123,392.64/170,282.64 = 66,804/x
  3. Step 3: Cross multiply
    123,392.64x = 170,282.64 × 66,804
  4. Step 4: Simplify right side
    123,392.64x = 11,375,561,482.56
  5. Step 5: Solve for x
    x = 11,375,561,482.56/123,392.64
  6. Step 6: Final answer
    x = 92,189.95

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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.