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Finding the Fourth Proportional to 123,151.68, 169,949.60 and 66,563.04

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Solution

The fourth proportional to 123,151.68, 169,949.60 and 66,563.04 is: 91,857.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,151.68 : 169,949.60 = 66,563.04 : x
  2. Step 2: Convert to fraction form
    123,151.68/169,949.60 = 66,563.04/x
  3. Step 3: Cross multiply
    123,151.68x = 169,949.60 × 66,563.04
  4. Step 4: Simplify right side
    123,151.68x = 11,312,362,022.78
  5. Step 5: Solve for x
    x = 11,312,362,022.78/123,151.68
  6. Step 6: Final answer
    x = 91,857.15

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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.