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Finding the Fourth Proportional to 172,706.96, 259,095.36 and 72,867.39

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Solution

The fourth proportional to 172,706.96, 259,095.36 and 72,867.39 is: 109,315.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,706.96 : 259,095.36 = 72,867.39 : x
  2. Step 2: Convert to fraction form
    172,706.96/259,095.36 = 72,867.39/x
  3. Step 3: Cross multiply
    172,706.96x = 259,095.36 × 72,867.39
  4. Step 4: Simplify right side
    172,706.96x = 18,879,602,644.31
  5. Step 5: Solve for x
    x = 18,879,602,644.31/172,706.96
  6. Step 6: Final answer
    x = 109,315.82

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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.