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Finding the Fourth Proportional to 172,909.25, 238,811.60 and 116,222.21

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Solution

The fourth proportional to 172,909.25, 238,811.60 and 116,222.21 is: 160,518.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,909.25 : 238,811.60 = 116,222.21 : x
  2. Step 2: Convert to fraction form
    172,909.25/238,811.60 = 116,222.21/x
  3. Step 3: Cross multiply
    172,909.25x = 238,811.60 × 116,222.21
  4. Step 4: Simplify right side
    172,909.25x = 27,755,211,344.53
  5. Step 5: Solve for x
    x = 27,755,211,344.53/172,909.25
  6. Step 6: Final answer
    x = 160,518.95

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.