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Finding the Fourth Proportional to 131,264.92, 196,916.70 and 42,488.92

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Solution

The fourth proportional to 131,264.92, 196,916.70 and 42,488.92 is: 63,739.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,264.92 : 196,916.70 = 42,488.92 : x
  2. Step 2: Convert to fraction form
    131,264.92/196,916.70 = 42,488.92/x
  3. Step 3: Cross multiply
    131,264.92x = 196,916.70 × 42,488.92
  4. Step 4: Simplify right side
    131,264.92x = 8,366,777,912.96
  5. Step 5: Solve for x
    x = 8,366,777,912.96/131,264.92
  6. Step 6: Final answer
    x = 63,739.63

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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.