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Finding the Fourth Proportional to 172,418.27, 258,498.59 and 118,957.73

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Solution

The fourth proportional to 172,418.27, 258,498.59 and 118,957.73 is: 178,347.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,418.27 : 258,498.59 = 118,957.73 : x
  2. Step 2: Convert to fraction form
    172,418.27/258,498.59 = 118,957.73/x
  3. Step 3: Cross multiply
    172,418.27x = 258,498.59 × 118,957.73
  4. Step 4: Simplify right side
    172,418.27x = 30,750,403,587.32
  5. Step 5: Solve for x
    x = 30,750,403,587.32/172,418.27
  6. Step 6: Final answer
    x = 178,347.72

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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.