Home / 223,309.18-308,167.81-121,334.90

Finding the Fourth Proportional to 223,309.18, 308,167.81 and 121,334.90

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Solution

The fourth proportional to 223,309.18, 308,167.81 and 121,334.90 is: 167,442.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,309.18 : 308,167.81 = 121,334.90 : x
  2. Step 2: Convert to fraction form
    223,309.18/308,167.81 = 121,334.90/x
  3. Step 3: Cross multiply
    223,309.18x = 308,167.81 × 121,334.90
  4. Step 4: Simplify right side
    223,309.18x = 37,391,510,409.57
  5. Step 5: Solve for x
    x = 37,391,510,409.57/223,309.18
  6. Step 6: Final answer
    x = 167,442.78

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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.