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Finding the Fourth Proportional to 187,662.78, 280,787.90 and 131,612.30

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Solution

The fourth proportional to 187,662.78, 280,787.90 and 131,612.30 is: 196,923.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,662.78 : 280,787.90 = 131,612.30 : x
  2. Step 2: Convert to fraction form
    187,662.78/280,787.90 = 131,612.30/x
  3. Step 3: Cross multiply
    187,662.78x = 280,787.90 × 131,612.30
  4. Step 4: Simplify right side
    187,662.78x = 36,955,141,331.17
  5. Step 5: Solve for x
    x = 36,955,141,331.17/187,662.78
  6. Step 6: Final answer
    x = 196,923.13

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1.5x scale

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.