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Finding the Fourth Proportional to 172,354.17, 258,529.32 and 67,246.95

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Solution

The fourth proportional to 172,354.17, 258,529.32 and 67,246.95 is: 100,869.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,354.17 : 258,529.32 = 67,246.95 : x
  2. Step 2: Convert to fraction form
    172,354.17/258,529.32 = 67,246.95/x
  3. Step 3: Cross multiply
    172,354.17x = 258,529.32 × 67,246.95
  4. Step 4: Simplify right side
    172,354.17x = 17,385,308,255.57
  5. Step 5: Solve for x
    x = 17,385,308,255.57/172,354.17
  6. Step 6: Final answer
    x = 100,869.67

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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.