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Finding the Fourth Proportional to 192,959.86, 289,538.63 and 91,872.31

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Solution

The fourth proportional to 192,959.86, 289,538.63 and 91,872.31 is: 137,855.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,959.86 : 289,538.63 = 91,872.31 : x
  2. Step 2: Convert to fraction form
    192,959.86/289,538.63 = 91,872.31/x
  3. Step 3: Cross multiply
    192,959.86x = 289,538.63 × 91,872.31
  4. Step 4: Simplify right side
    192,959.86x = 26,600,582,772.34
  5. Step 5: Solve for x
    x = 26,600,582,772.34/192,959.86
  6. Step 6: Final answer
    x = 137,855.52

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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.