Home / 90,141.28-135,215.02-30,976.44

Finding the Fourth Proportional to 90,141.28, 135,215.02 and 30,976.44

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Solution

The fourth proportional to 90,141.28, 135,215.02 and 30,976.44 is: 46,465.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,141.28 : 135,215.02 = 30,976.44 : x
  2. Step 2: Convert to fraction form
    90,141.28/135,215.02 = 30,976.44/x
  3. Step 3: Cross multiply
    90,141.28x = 135,215.02 × 30,976.44
  4. Step 4: Simplify right side
    90,141.28x = 4,188,479,954.13
  5. Step 5: Solve for x
    x = 4,188,479,954.13/90,141.28
  6. Step 6: Final answer
    x = 46,465.73

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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.