Home / 156,183.76-234,317.10-81,281.74

Finding the Fourth Proportional to 156,183.76, 234,317.10 and 81,281.74

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Solution

The fourth proportional to 156,183.76, 234,317.10 and 81,281.74 is: 121,944.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,183.76 : 234,317.10 = 81,281.74 : x
  2. Step 2: Convert to fraction form
    156,183.76/234,317.10 = 81,281.74/x
  3. Step 3: Cross multiply
    156,183.76x = 234,317.10 × 81,281.74
  4. Step 4: Simplify right side
    156,183.76x = 19,045,701,599.75
  5. Step 5: Solve for x
    x = 19,045,701,599.75/156,183.76
  6. Step 6: Final answer
    x = 121,944.19

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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.