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Finding the Fourth Proportional to 90,808.50, 136,212.75 and 25,144.50

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Solution

The fourth proportional to 90,808.50, 136,212.75 and 25,144.50 is: 37,716.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,808.50 : 136,212.75 = 25,144.50 : x
  2. Step 2: Convert to fraction form
    90,808.50/136,212.75 = 25,144.50/x
  3. Step 3: Cross multiply
    90,808.50x = 136,212.75 × 25,144.50
  4. Step 4: Simplify right side
    90,808.50x = 3,425,001,492.38
  5. Step 5: Solve for x
    x = 3,425,001,492.38/90,808.50
  6. Step 6: Final answer
    x = 37,716.75

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Double scale
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Similar ratio
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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.