Home / 215,905.80-323,705.10-82,734.60

Finding the Fourth Proportional to 215,905.80, 323,705.10 and 82,734.60

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Solution

The fourth proportional to 215,905.80, 323,705.10 and 82,734.60 is: 124,043.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,905.80 : 323,705.10 = 82,734.60 : x
  2. Step 2: Convert to fraction form
    215,905.80/323,705.10 = 82,734.60/x
  3. Step 3: Cross multiply
    215,905.80x = 323,705.10 × 82,734.60
  4. Step 4: Simplify right side
    215,905.80x = 26,781,611,966.46
  5. Step 5: Solve for x
    x = 26,781,611,966.46/215,905.80
  6. Step 6: Final answer
    x = 124,043.04

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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.