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Finding the Fourth Proportional to 213,092.56, 319,555.76 and 79,900.08

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Solution

The fourth proportional to 213,092.56, 319,555.76 and 79,900.08 is: 119,818.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,092.56 : 319,555.76 = 79,900.08 : x
  2. Step 2: Convert to fraction form
    213,092.56/319,555.76 = 79,900.08/x
  3. Step 3: Cross multiply
    213,092.56x = 319,555.76 × 79,900.08
  4. Step 4: Simplify right side
    213,092.56x = 25,532,530,788.46
  5. Step 5: Solve for x
    x = 25,532,530,788.46/213,092.56
  6. Step 6: Final answer
    x = 119,818.97

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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.