Home / 234,155.12-323,139-138,626.96

Finding the Fourth Proportional to 234,155.12, 323,139 and 138,626.96

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Solution

The fourth proportional to 234,155.12, 323,139 and 138,626.96 is: 191,308.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    234,155.12 : 323,139 = 138,626.96 : x
  2. Step 2: Convert to fraction form
    234,155.12/323,139 = 138,626.96/x
  3. Step 3: Cross multiply
    234,155.12x = 323,139 × 138,626.96
  4. Step 4: Simplify right side
    234,155.12x = 44,795,777,227.44
  5. Step 5: Solve for x
    x = 44,795,777,227.44/234,155.12
  6. Step 6: Final answer
    x = 191,308.13

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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.