Home / 90,110.25-135,176.31-27,780.75

Finding the Fourth Proportional to 90,110.25, 135,176.31 and 27,780.75

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Solution

The fourth proportional to 90,110.25, 135,176.31 and 27,780.75 is: 41,674.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,110.25 : 135,176.31 = 27,780.75 : x
  2. Step 2: Convert to fraction form
    90,110.25/135,176.31 = 27,780.75/x
  3. Step 3: Cross multiply
    90,110.25x = 135,176.31 × 27,780.75
  4. Step 4: Simplify right side
    90,110.25x = 3,755,299,274.03
  5. Step 5: Solve for x
    x = 3,755,299,274.03/90,110.25
  6. Step 6: Final answer
    x = 41,674.50

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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.