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Finding the Fourth Proportional to 172,873.75, 238,565.79 and 93,385.75

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Solution

The fourth proportional to 172,873.75, 238,565.79 and 93,385.75 is: 128,872.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,873.75 : 238,565.79 = 93,385.75 : x
  2. Step 2: Convert to fraction form
    172,873.75/238,565.79 = 93,385.75/x
  3. Step 3: Cross multiply
    172,873.75x = 238,565.79 × 93,385.75
  4. Step 4: Simplify right side
    172,873.75x = 22,278,645,223.49
  5. Step 5: Solve for x
    x = 22,278,645,223.49/172,873.75
  6. Step 6: Final answer
    x = 128,872.34

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.