Home / 135,438.32-186,899.72-74,183.53

Finding the Fourth Proportional to 135,438.32, 186,899.72 and 74,183.53

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Solution

The fourth proportional to 135,438.32, 186,899.72 and 74,183.53 is: 102,370.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,438.32 : 186,899.72 = 74,183.53 : x
  2. Step 2: Convert to fraction form
    135,438.32/186,899.72 = 74,183.53/x
  3. Step 3: Cross multiply
    135,438.32x = 186,899.72 × 74,183.53
  4. Step 4: Simplify right side
    135,438.32x = 13,864,880,147.44
  5. Step 5: Solve for x
    x = 13,864,880,147.44/135,438.32
  6. Step 6: Final answer
    x = 102,370.44

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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.