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Finding the Fourth Proportional to 151,721.30, 227,326.80 and 120,009.80

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Solution

The fourth proportional to 151,721.30, 227,326.80 and 120,009.80 is: 179,812.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,721.30 : 227,326.80 = 120,009.80 : x
  2. Step 2: Convert to fraction form
    151,721.30/227,326.80 = 120,009.80/x
  3. Step 3: Cross multiply
    151,721.30x = 227,326.80 × 120,009.80
  4. Step 4: Simplify right side
    151,721.30x = 27,281,443,802.64
  5. Step 5: Solve for x
    x = 27,281,443,802.64/151,721.30
  6. Step 6: Final answer
    x = 179,812.88

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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.