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Finding the Fourth Proportional to 151,992.80, 227,989.20 and 139,551.20

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Solution

The fourth proportional to 151,992.80, 227,989.20 and 139,551.20 is: 209,326.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,992.80 : 227,989.20 = 139,551.20 : x
  2. Step 2: Convert to fraction form
    151,992.80/227,989.20 = 139,551.20/x
  3. Step 3: Cross multiply
    151,992.80x = 227,989.20 × 139,551.20
  4. Step 4: Simplify right side
    151,992.80x = 31,816,166,447.04
  5. Step 5: Solve for x
    x = 31,816,166,447.04/151,992.80
  6. Step 6: Final answer
    x = 209,326.80

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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.