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Finding the Fourth Proportional to 168,006.14, 251,921.71 and 79,235.81

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Solution

The fourth proportional to 168,006.14, 251,921.71 and 79,235.81 is: 118,812.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,006.14 : 251,921.71 = 79,235.81 : x
  2. Step 2: Convert to fraction form
    168,006.14/251,921.71 = 79,235.81/x
  3. Step 3: Cross multiply
    168,006.14x = 251,921.71 × 79,235.81
  4. Step 4: Simplify right side
    168,006.14x = 19,961,219,290.74
  5. Step 5: Solve for x
    x = 19,961,219,290.74/168,006.14
  6. Step 6: Final answer
    x = 118,812.44

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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.