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Finding the Fourth Proportional to 90,768.70, 136,481.10 and 88,800.40

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Solution

The fourth proportional to 90,768.70, 136,481.10 and 88,800.40 is: 133,521.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,768.70 : 136,481.10 = 88,800.40 : x
  2. Step 2: Convert to fraction form
    90,768.70/136,481.10 = 88,800.40/x
  3. Step 3: Cross multiply
    90,768.70x = 136,481.10 × 88,800.40
  4. Step 4: Simplify right side
    90,768.70x = 12,119,576,272.44
  5. Step 5: Solve for x
    x = 12,119,576,272.44/90,768.70
  6. Step 6: Final answer
    x = 133,521.54

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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.