Home / 156,935.85-216,566.77-85,314.03

Finding the Fourth Proportional to 156,935.85, 216,566.77 and 85,314.03

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Solution

The fourth proportional to 156,935.85, 216,566.77 and 85,314.03 is: 117,730.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,935.85 : 216,566.77 = 85,314.03 : x
  2. Step 2: Convert to fraction form
    156,935.85/216,566.77 = 85,314.03/x
  3. Step 3: Cross multiply
    156,935.85x = 216,566.77 × 85,314.03
  4. Step 4: Simplify right side
    156,935.85x = 18,476,183,912.78
  5. Step 5: Solve for x
    x = 18,476,183,912.78/156,935.85
  6. Step 6: Final answer
    x = 117,730.80

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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.