Home / 156,933.60-216,563.67-85,311.78

Finding the Fourth Proportional to 156,933.60, 216,563.67 and 85,311.78

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Solution

The fourth proportional to 156,933.60, 216,563.67 and 85,311.78 is: 117,727.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,933.60 : 216,563.67 = 85,311.78 : x
  2. Step 2: Convert to fraction form
    156,933.60/216,563.67 = 85,311.78/x
  3. Step 3: Cross multiply
    156,933.60x = 216,563.67 × 85,311.78
  4. Step 4: Simplify right side
    156,933.60x = 18,475,432,171.03
  5. Step 5: Solve for x
    x = 18,475,432,171.03/156,933.60
  6. Step 6: Final answer
    x = 117,727.70

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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.