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Finding the Fourth Proportional to 168,005.67, 251,921.00 and 79,235.34

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Solution

The fourth proportional to 168,005.67, 251,921.00 and 79,235.34 is: 118,811.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,005.67 : 251,921.00 = 79,235.34 : x
  2. Step 2: Convert to fraction form
    168,005.67/251,921.00 = 79,235.34/x
  3. Step 3: Cross multiply
    168,005.67x = 251,921.00 × 79,235.34
  4. Step 4: Simplify right side
    168,005.67x = 19,961,045,341.52
  5. Step 5: Solve for x
    x = 19,961,045,341.52/168,005.67
  6. Step 6: Final answer
    x = 118,811.74

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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.