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Finding the Fourth Proportional to 123,157.16, 169,956.99 and 66,568.53

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Solution

The fourth proportional to 123,157.16, 169,956.99 and 66,568.53 is: 91,864.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,157.16 : 169,956.99 = 66,568.53 : x
  2. Step 2: Convert to fraction form
    123,157.16/169,956.99 = 66,568.53/x
  3. Step 3: Cross multiply
    123,157.16x = 169,956.99 × 66,568.53
  4. Step 4: Simplify right side
    123,157.16x = 11,313,786,987.52
  5. Step 5: Solve for x
    x = 11,313,786,987.52/123,157.16
  6. Step 6: Final answer
    x = 91,864.63

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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.