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Finding the Fourth Proportional to 135,325.10, 186,744 and 74,898.32

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Solution

The fourth proportional to 135,325.10, 186,744 and 74,898.32 is: 103,357.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,325.10 : 186,744 = 74,898.32 : x
  2. Step 2: Convert to fraction form
    135,325.10/186,744 = 74,898.32/x
  3. Step 3: Cross multiply
    135,325.10x = 186,744 × 74,898.32
  4. Step 4: Simplify right side
    135,325.10x = 13,986,811,870.08
  5. Step 5: Solve for x
    x = 13,986,811,870.08/135,325.10
  6. Step 6: Final answer
    x = 103,357.11

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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.