Home / 156,824.64-216,414.72-85,201.92

Finding the Fourth Proportional to 156,824.64, 216,414.72 and 85,201.92

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Solution

The fourth proportional to 156,824.64, 216,414.72 and 85,201.92 is: 117,576.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,824.64 : 216,414.72 = 85,201.92 : x
  2. Step 2: Convert to fraction form
    156,824.64/216,414.72 = 85,201.92/x
  3. Step 3: Cross multiply
    156,824.64x = 216,414.72 × 85,201.92
  4. Step 4: Simplify right side
    156,824.64x = 18,438,949,660.26
  5. Step 5: Solve for x
    x = 18,438,949,660.26/156,824.64
  6. Step 6: Final answer
    x = 117,576.87

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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.