Home / 223,134.20-307,916-121,155.68

Finding the Fourth Proportional to 223,134.20, 307,916 and 121,155.68

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Solution

The fourth proportional to 223,134.20, 307,916 and 121,155.68 is: 167,189.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,134.20 : 307,916 = 121,155.68 : x
  2. Step 2: Convert to fraction form
    223,134.20/307,916 = 121,155.68/x
  3. Step 3: Cross multiply
    223,134.20x = 307,916 × 121,155.68
  4. Step 4: Simplify right side
    223,134.20x = 37,305,772,362.88
  5. Step 5: Solve for x
    x = 37,305,772,362.88/223,134.20
  6. Step 6: Final answer
    x = 167,189.85

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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.