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Finding the Fourth Proportional to 131,218.65, 196,859.22 and 42,472.17

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Solution

The fourth proportional to 131,218.65, 196,859.22 and 42,472.17 is: 63,718.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,218.65 : 196,859.22 = 42,472.17 : x
  2. Step 2: Convert to fraction form
    131,218.65/196,859.22 = 42,472.17/x
  3. Step 3: Cross multiply
    131,218.65x = 196,859.22 × 42,472.17
  4. Step 4: Simplify right side
    131,218.65x = 8,361,038,257.91
  5. Step 5: Solve for x
    x = 8,361,038,257.91/131,218.65
  6. Step 6: Final answer
    x = 63,718.37

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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.