Home / 221,969.12-306,318.40-121,367.04

Finding the Fourth Proportional to 221,969.12, 306,318.40 and 121,367.04

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Solution

The fourth proportional to 221,969.12, 306,318.40 and 121,367.04 is: 167,487.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,969.12 : 306,318.40 = 121,367.04 : x
  2. Step 2: Convert to fraction form
    221,969.12/306,318.40 = 121,367.04/x
  3. Step 3: Cross multiply
    221,969.12x = 306,318.40 × 121,367.04
  4. Step 4: Simplify right side
    221,969.12x = 37,176,957,505.54
  5. Step 5: Solve for x
    x = 37,176,957,505.54/221,969.12
  6. Step 6: Final answer
    x = 167,487.07

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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.