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Finding the Fourth Proportional to 90,123.84, 135,189.25 and 26,944.90

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Solution

The fourth proportional to 90,123.84, 135,189.25 and 26,944.90 is: 40,418.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,123.84 : 135,189.25 = 26,944.90 : x
  2. Step 2: Convert to fraction form
    90,123.84/135,189.25 = 26,944.90/x
  3. Step 3: Cross multiply
    90,123.84x = 135,189.25 × 26,944.90
  4. Step 4: Simplify right side
    90,123.84x = 3,642,661,328.99
  5. Step 5: Solve for x
    x = 3,642,661,328.99/90,123.84
  6. Step 6: Final answer
    x = 40,418.40

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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.