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Finding the Fourth Proportional to 179,987.65, 270,021.73 and 67,668.84

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Solution

The fourth proportional to 179,987.65, 270,021.73 and 67,668.84 is: 101,518.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    179,987.65 : 270,021.73 = 67,668.84 : x
  2. Step 2: Convert to fraction form
    179,987.65/270,021.73 = 67,668.84/x
  3. Step 3: Cross multiply
    179,987.65x = 270,021.73 × 67,668.84
  4. Step 4: Simplify right side
    179,987.65x = 18,272,056,189.02
  5. Step 5: Solve for x
    x = 18,272,056,189.02/179,987.65
  6. Step 6: Final answer
    x = 101,518.39

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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.