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Finding the Fourth Proportional to 207,903.23, 311,859.71 and 67,672.79

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Solution

The fourth proportional to 207,903.23, 311,859.71 and 67,672.79 is: 101,510.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,903.23 : 311,859.71 = 67,672.79 : x
  2. Step 2: Convert to fraction form
    207,903.23/311,859.71 = 67,672.79/x
  3. Step 3: Cross multiply
    207,903.23x = 311,859.71 × 67,672.79
  4. Step 4: Simplify right side
    207,903.23x = 21,104,416,664.29
  5. Step 5: Solve for x
    x = 21,104,416,664.29/207,903.23
  6. Step 6: Final answer
    x = 101,510.77

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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.