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Finding the Fourth Proportional to 123,159.96, 169,960.79 and 66,571.34

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Solution

The fourth proportional to 123,159.96, 169,960.79 and 66,571.34 is: 91,868.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,159.96 : 169,960.79 = 66,571.34 : x
  2. Step 2: Convert to fraction form
    123,159.96/169,960.79 = 66,571.34/x
  3. Step 3: Cross multiply
    123,159.96x = 169,960.79 × 66,571.34
  4. Step 4: Simplify right side
    123,159.96x = 11,314,516,854.38
  5. Step 5: Solve for x
    x = 11,314,516,854.38/123,159.96
  6. Step 6: Final answer
    x = 91,868.47

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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.