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Finding the Fourth Proportional to 131,768.86, 197,582.19 and 68,432.73

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Solution

The fourth proportional to 131,768.86, 197,582.19 and 68,432.73 is: 102,612.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,768.86 : 197,582.19 = 68,432.73 : x
  2. Step 2: Convert to fraction form
    131,768.86/197,582.19 = 68,432.73/x
  3. Step 3: Cross multiply
    131,768.86x = 197,582.19 × 68,432.73
  4. Step 4: Simplify right side
    131,768.86x = 13,521,088,661.08
  5. Step 5: Solve for x
    x = 13,521,088,661.08/131,768.86
  6. Step 6: Final answer
    x = 102,612.17

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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.