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Finding the Fourth Proportional to 172,707.71, 259,096.49 and 72,868.14

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Solution

The fourth proportional to 172,707.71, 259,096.49 and 72,868.14 is: 109,316.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,707.71 : 259,096.49 = 72,868.14 : x
  2. Step 2: Convert to fraction form
    172,707.71/259,096.49 = 72,868.14/x
  3. Step 3: Cross multiply
    172,707.71x = 259,096.49 × 72,868.14
  4. Step 4: Simplify right side
    172,707.71x = 18,879,878,942.49
  5. Step 5: Solve for x
    x = 18,879,878,942.49/172,707.71
  6. Step 6: Final answer
    x = 109,316.95

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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.