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Finding the Fourth Proportional to 181,699.20, 272,440.80 and 111,628.80

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Solution

The fourth proportional to 181,699.20, 272,440.80 and 111,628.80 is: 167,376.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    181,699.20 : 272,440.80 = 111,628.80 : x
  2. Step 2: Convert to fraction form
    181,699.20/272,440.80 = 111,628.80/x
  3. Step 3: Cross multiply
    181,699.20x = 272,440.80 × 111,628.80
  4. Step 4: Simplify right side
    181,699.20x = 30,412,239,575.04
  5. Step 5: Solve for x
    x = 30,412,239,575.04/181,699.20
  6. Step 6: Final answer
    x = 167,376.85

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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.