Home / 90,145.03-135,188.71-30,966.43

Finding the Fourth Proportional to 90,145.03, 135,188.71 and 30,966.43

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Solution

The fourth proportional to 90,145.03, 135,188.71 and 30,966.43 is: 46,439.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,145.03 : 135,188.71 = 30,966.43 : x
  2. Step 2: Convert to fraction form
    90,145.03/135,188.71 = 30,966.43/x
  3. Step 3: Cross multiply
    90,145.03x = 135,188.71 × 30,966.43
  4. Step 4: Simplify right side
    90,145.03x = 4,186,311,725.01
  5. Step 5: Solve for x
    x = 4,186,311,725.01/90,145.03
  6. Step 6: Final answer
    x = 46,439.74

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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.