Home / 215,861.76-323,795.60-82,748.80

Finding the Fourth Proportional to 215,861.76, 323,795.60 and 82,748.80

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Solution

The fourth proportional to 215,861.76, 323,795.60 and 82,748.80 is: 124,124.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,861.76 : 323,795.60 = 82,748.80 : x
  2. Step 2: Convert to fraction form
    215,861.76/323,795.60 = 82,748.80/x
  3. Step 3: Cross multiply
    215,861.76x = 323,795.60 × 82,748.80
  4. Step 4: Simplify right side
    215,861.76x = 26,793,697,345.28
  5. Step 5: Solve for x
    x = 26,793,697,345.28/215,861.76
  6. Step 6: Final answer
    x = 124,124.33

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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.