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Finding the Fourth Proportional to 149,321.70, 206,063.94 and 82,253.70

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Solution

The fourth proportional to 149,321.70, 206,063.94 and 82,253.70 is: 113,510.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,321.70 : 206,063.94 = 82,253.70 : x
  2. Step 2: Convert to fraction form
    149,321.70/206,063.94 = 82,253.70/x
  3. Step 3: Cross multiply
    149,321.70x = 206,063.94 × 82,253.70
  4. Step 4: Simplify right side
    149,321.70x = 16,949,521,501.58
  5. Step 5: Solve for x
    x = 16,949,521,501.58/149,321.70
  6. Step 6: Final answer
    x = 113,510.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.