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Finding the Fourth Proportional to 179,672.40, 268,990.20 and 109,688.40

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Solution

The fourth proportional to 179,672.40, 268,990.20 and 109,688.40 is: 164,216.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    179,672.40 : 268,990.20 = 109,688.40 : x
  2. Step 2: Convert to fraction form
    179,672.40/268,990.20 = 109,688.40/x
  3. Step 3: Cross multiply
    179,672.40x = 268,990.20 × 109,688.40
  4. Step 4: Simplify right side
    179,672.40x = 29,505,104,653.68
  5. Step 5: Solve for x
    x = 29,505,104,653.68/179,672.40
  6. Step 6: Final answer
    x = 164,216.12

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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.