Home / 191,183.20-286,607.13-72,775.78

Finding the Fourth Proportional to 191,183.20, 286,607.13 and 72,775.78

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Solution

The fourth proportional to 191,183.20, 286,607.13 and 72,775.78 is: 109,099.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,183.20 : 286,607.13 = 72,775.78 : x
  2. Step 2: Convert to fraction form
    191,183.20/286,607.13 = 72,775.78/x
  3. Step 3: Cross multiply
    191,183.20x = 286,607.13 × 72,775.78
  4. Step 4: Simplify right side
    191,183.20x = 20,858,056,449.88
  5. Step 5: Solve for x
    x = 20,858,056,449.88/191,183.20
  6. Step 6: Final answer
    x = 109,099.84

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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.