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Finding the Fourth Proportional to 123,243.06, 170,075.43 and 66,654.42

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Solution

The fourth proportional to 123,243.06, 170,075.43 and 66,654.42 is: 91,983.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,243.06 : 170,075.43 = 66,654.42 : x
  2. Step 2: Convert to fraction form
    123,243.06/170,075.43 = 66,654.42/x
  3. Step 3: Cross multiply
    123,243.06x = 170,075.43 × 66,654.42
  4. Step 4: Simplify right side
    123,243.06x = 11,336,279,142.90
  5. Step 5: Solve for x
    x = 11,336,279,142.90/123,243.06
  6. Step 6: Final answer
    x = 91,983.10

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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.