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Finding the Fourth Proportional to 188,157.52, 282,121.80 and 79,959.34

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Solution

The fourth proportional to 188,157.52, 282,121.80 and 79,959.34 is: 119,890.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,157.52 : 282,121.80 = 79,959.34 : x
  2. Step 2: Convert to fraction form
    188,157.52/282,121.80 = 79,959.34/x
  3. Step 3: Cross multiply
    188,157.52x = 282,121.80 × 79,959.34
  4. Step 4: Simplify right side
    188,157.52x = 22,558,272,927.61
  5. Step 5: Solve for x
    x = 22,558,272,927.61/188,157.52
  6. Step 6: Final answer
    x = 119,890.36

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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.