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Finding the Fourth Proportional to 123,065.25, 169,830.12 and 66,476.64

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Solution

The fourth proportional to 123,065.25, 169,830.12 and 66,476.64 is: 91,737.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,065.25 : 169,830.12 = 66,476.64 : x
  2. Step 2: Convert to fraction form
    123,065.25/169,830.12 = 66,476.64/x
  3. Step 3: Cross multiply
    123,065.25x = 169,830.12 × 66,476.64
  4. Step 4: Simplify right side
    123,065.25x = 11,289,735,748.40
  5. Step 5: Solve for x
    x = 11,289,735,748.40/123,065.25
  6. Step 6: Final answer
    x = 91,737.80

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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.