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Finding the Fourth Proportional to 171,908.44, 258,032.37 and 129,064.86

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Solution

The fourth proportional to 171,908.44, 258,032.37 and 129,064.86 is: 193,724.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,908.44 : 258,032.37 = 129,064.86 : x
  2. Step 2: Convert to fraction form
    171,908.44/258,032.37 = 129,064.86/x
  3. Step 3: Cross multiply
    171,908.44x = 258,032.37 × 129,064.86
  4. Step 4: Simplify right side
    171,908.44x = 33,302,911,709.52
  5. Step 5: Solve for x
    x = 33,302,911,709.52/171,908.44
  6. Step 6: Final answer
    x = 193,724.70

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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.