Home / 215,913.40-323,772.90-82,749.40

Finding the Fourth Proportional to 215,913.40, 323,772.90 and 82,749.40

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Solution

The fourth proportional to 215,913.40, 323,772.90 and 82,749.40 is: 124,086.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,913.40 : 323,772.90 = 82,749.40 : x
  2. Step 2: Convert to fraction form
    215,913.40/323,772.90 = 82,749.40/x
  3. Step 3: Cross multiply
    215,913.40x = 323,772.90 × 82,749.40
  4. Step 4: Simplify right side
    215,913.40x = 26,792,013,211.26
  5. Step 5: Solve for x
    x = 26,792,013,211.26/215,913.40
  6. Step 6: Final answer
    x = 124,086.85

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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.