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Finding the Fourth Proportional to 181,281.28, 271,928.76 and 68,940.56

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Solution

The fourth proportional to 181,281.28, 271,928.76 and 68,940.56 is: 103,413.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    181,281.28 : 271,928.76 = 68,940.56 : x
  2. Step 2: Convert to fraction form
    181,281.28/271,928.76 = 68,940.56/x
  3. Step 3: Cross multiply
    181,281.28x = 271,928.76 × 68,940.56
  4. Step 4: Simplify right side
    181,281.28x = 18,746,920,994.51
  5. Step 5: Solve for x
    x = 18,746,920,994.51/181,281.28
  6. Step 6: Final answer
    x = 103,413.44

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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.