Home / 90,453.42-135,684.38-74,629.13

Finding the Fourth Proportional to 90,453.42, 135,684.38 and 74,629.13

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Solution

The fourth proportional to 90,453.42, 135,684.38 and 74,629.13 is: 111,947.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,453.42 : 135,684.38 = 74,629.13 : x
  2. Step 2: Convert to fraction form
    90,453.42/135,684.38 = 74,629.13/x
  3. Step 3: Cross multiply
    90,453.42x = 135,684.38 × 74,629.13
  4. Step 4: Simplify right side
    90,453.42x = 10,126,006,742.14
  5. Step 5: Solve for x
    x = 10,126,006,742.14/90,453.42
  6. Step 6: Final answer
    x = 111,947.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.