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Finding the Fourth Proportional to 131,804.60, 197,706.90 and 100,311.80

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Solution

The fourth proportional to 131,804.60, 197,706.90 and 100,311.80 is: 150,467.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,804.60 : 197,706.90 = 100,311.80 : x
  2. Step 2: Convert to fraction form
    131,804.60/197,706.90 = 100,311.80/x
  3. Step 3: Cross multiply
    131,804.60x = 197,706.90 × 100,311.80
  4. Step 4: Simplify right side
    131,804.60x = 19,832,335,011.42
  5. Step 5: Solve for x
    x = 19,832,335,011.42/131,804.60
  6. Step 6: Final answer
    x = 150,467.70

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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.