Home / 156,721.60-235,183.20-86,651.20

Finding the Fourth Proportional to 156,721.60, 235,183.20 and 86,651.20

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Solution

The fourth proportional to 156,721.60, 235,183.20 and 86,651.20 is: 130,032.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,721.60 : 235,183.20 = 86,651.20 : x
  2. Step 2: Convert to fraction form
    156,721.60/235,183.20 = 86,651.20/x
  3. Step 3: Cross multiply
    156,721.60x = 235,183.20 × 86,651.20
  4. Step 4: Simplify right side
    156,721.60x = 20,378,906,499.84
  5. Step 5: Solve for x
    x = 20,378,906,499.84/156,721.60
  6. Step 6: Final answer
    x = 130,032.53

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.