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Finding the Fourth Proportional to 134,956.80, 186,238.44 and 74,530

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Solution

The fourth proportional to 134,956.80, 186,238.44 and 74,530 is: 102,850.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,956.80 : 186,238.44 = 74,530 : x
  2. Step 2: Convert to fraction form
    134,956.80/186,238.44 = 74,530/x
  3. Step 3: Cross multiply
    134,956.80x = 186,238.44 × 74,530
  4. Step 4: Simplify right side
    134,956.80x = 13,880,350,933.20
  5. Step 5: Solve for x
    x = 13,880,350,933.20/134,956.80
  6. Step 6: Final answer
    x = 102,850.33

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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.