Home / 156,933.87-216,566.19-85,315.68

Finding the Fourth Proportional to 156,933.87, 216,566.19 and 85,315.68

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Solution

The fourth proportional to 156,933.87, 216,566.19 and 85,315.68 is: 117,734.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,933.87 : 216,566.19 = 85,315.68 : x
  2. Step 2: Convert to fraction form
    156,933.87/216,566.19 = 85,315.68/x
  3. Step 3: Cross multiply
    156,933.87x = 216,566.19 × 85,315.68
  4. Step 4: Simplify right side
    156,933.87x = 18,476,491,764.86
  5. Step 5: Solve for x
    x = 18,476,491,764.86/156,933.87
  6. Step 6: Final answer
    x = 117,734.25

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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.