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Finding the Fourth Proportional to 135,365.87, 186,807.11 and 74,111.04

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Solution

The fourth proportional to 135,365.87, 186,807.11 and 74,111.04 is: 102,274.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,365.87 : 186,807.11 = 74,111.04 : x
  2. Step 2: Convert to fraction form
    135,365.87/186,807.11 = 74,111.04/x
  3. Step 3: Cross multiply
    135,365.87x = 186,807.11 × 74,111.04
  4. Step 4: Simplify right side
    135,365.87x = 13,844,468,919.75
  5. Step 5: Solve for x
    x = 13,844,468,919.75/135,365.87
  6. Step 6: Final answer
    x = 102,274.44

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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.