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Finding the Fourth Proportional to 99,671.22, 149,506.83 and 68,411.70

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Solution

The fourth proportional to 99,671.22, 149,506.83 and 68,411.70 is: 102,617.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,671.22 : 149,506.83 = 68,411.70 : x
  2. Step 2: Convert to fraction form
    99,671.22/149,506.83 = 68,411.70/x
  3. Step 3: Cross multiply
    99,671.22x = 149,506.83 × 68,411.70
  4. Step 4: Simplify right side
    99,671.22x = 10,228,016,059.85
  5. Step 5: Solve for x
    x = 10,228,016,059.85/99,671.22
  6. Step 6: Final answer
    x = 102,617.55

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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.