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Finding the Fourth Proportional to 123,072.25, 169,839.71 and 66,483.63

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Solution

The fourth proportional to 123,072.25, 169,839.71 and 66,483.63 is: 91,747.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,072.25 : 169,839.71 = 66,483.63 : x
  2. Step 2: Convert to fraction form
    123,072.25/169,839.71 = 66,483.63/x
  3. Step 3: Cross multiply
    123,072.25x = 169,839.71 × 66,483.63
  4. Step 4: Simplify right side
    123,072.25x = 11,291,560,438.95
  5. Step 5: Solve for x
    x = 11,291,560,438.95/123,072.25
  6. Step 6: Final answer
    x = 91,747.41

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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.