Home / 90,185.49-135,279.14-40,268.12

Finding the Fourth Proportional to 90,185.49, 135,279.14 and 40,268.12

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Solution

The fourth proportional to 90,185.49, 135,279.14 and 40,268.12 is: 60,402.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,185.49 : 135,279.14 = 40,268.12 : x
  2. Step 2: Convert to fraction form
    90,185.49/135,279.14 = 40,268.12/x
  3. Step 3: Cross multiply
    90,185.49x = 135,279.14 × 40,268.12
  4. Step 4: Simplify right side
    90,185.49x = 5,447,435,765.28
  5. Step 5: Solve for x
    x = 5,447,435,765.28/90,185.49
  6. Step 6: Final answer
    x = 60,402.57

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1.5x scale

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.