Home / 90,331.21-135,503.53-27,146.27

Finding the Fourth Proportional to 90,331.21, 135,503.53 and 27,146.27

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Solution

The fourth proportional to 90,331.21, 135,503.53 and 27,146.27 is: 40,721.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,331.21 : 135,503.53 = 27,146.27 : x
  2. Step 2: Convert to fraction form
    90,331.21/135,503.53 = 27,146.27/x
  3. Step 3: Cross multiply
    90,331.21x = 135,503.53 × 27,146.27
  4. Step 4: Simplify right side
    90,331.21x = 3,678,415,750.09
  5. Step 5: Solve for x
    x = 3,678,415,750.09/90,331.21
  6. Step 6: Final answer
    x = 40,721.43

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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.