Home / 156,815.35-216,404.03-85,195.96

Finding the Fourth Proportional to 156,815.35, 216,404.03 and 85,195.96

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Solution

The fourth proportional to 156,815.35, 216,404.03 and 85,195.96 is: 117,569.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,815.35 : 216,404.03 = 85,195.96 : x
  2. Step 2: Convert to fraction form
    156,815.35/216,404.03 = 85,195.96/x
  3. Step 3: Cross multiply
    156,815.35x = 216,404.03 × 85,195.96
  4. Step 4: Simplify right side
    156,815.35x = 18,436,749,083.72
  5. Step 5: Solve for x
    x = 18,436,749,083.72/156,815.35
  6. Step 6: Final answer
    x = 117,569.80

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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.