Home / 156,932.88-216,571.62-85,317.72

Finding the Fourth Proportional to 156,932.88, 216,571.62 and 85,317.72

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Solution

The fourth proportional to 156,932.88, 216,571.62 and 85,317.72 is: 117,740.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,932.88 : 216,571.62 = 85,317.72 : x
  2. Step 2: Convert to fraction form
    156,932.88/216,571.62 = 85,317.72/x
  3. Step 3: Cross multiply
    156,932.88x = 216,571.62 × 85,317.72
  4. Step 4: Simplify right side
    156,932.88x = 18,477,396,835.11
  5. Step 5: Solve for x
    x = 18,477,396,835.11/156,932.88
  6. Step 6: Final answer
    x = 117,740.76

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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.