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Finding the Fourth Proportional to 131,792.87, 197,793.90 and 68,631.00

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Solution

The fourth proportional to 131,792.87, 197,793.90 and 68,631.00 is: 103,000.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,792.87 : 197,793.90 = 68,631.00 : x
  2. Step 2: Convert to fraction form
    131,792.87/197,793.90 = 68,631.00/x
  3. Step 3: Cross multiply
    131,792.87x = 197,793.90 × 68,631.00
  4. Step 4: Simplify right side
    131,792.87x = 13,574,792,409.17
  5. Step 5: Solve for x
    x = 13,574,792,409.17/131,792.87
  6. Step 6: Final answer
    x = 103,000.96

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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.