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Finding the Fourth Proportional to 123,534, 170,477.73 and 66,945.78

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Solution

The fourth proportional to 123,534, 170,477.73 and 66,945.78 is: 92,385.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,534 : 170,477.73 = 66,945.78 : x
  2. Step 2: Convert to fraction form
    123,534/170,477.73 = 66,945.78/x
  3. Step 3: Cross multiply
    123,534x = 170,477.73 × 66,945.78
  4. Step 4: Simplify right side
    123,534x = 11,412,764,607.48
  5. Step 5: Solve for x
    x = 11,412,764,607.48/123,534
  6. Step 6: Final answer
    x = 92,385.62

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.