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Finding the Fourth Proportional to 172,225.71, 258,358.01 and 72,367.29

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Solution

The fourth proportional to 172,225.71, 258,358.01 and 72,367.29 is: 108,559.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,225.71 : 258,358.01 = 72,367.29 : x
  2. Step 2: Convert to fraction form
    172,225.71/258,358.01 = 72,367.29/x
  3. Step 3: Cross multiply
    172,225.71x = 258,358.01 × 72,367.29
  4. Step 4: Simplify right side
    172,225.71x = 18,696,668,671.66
  5. Step 5: Solve for x
    x = 18,696,668,671.66/172,225.71
  6. Step 6: Final answer
    x = 108,559.10

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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.