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Finding the Fourth Proportional to 163,671.84, 225,876.40 and 109,129.88

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Solution

The fourth proportional to 163,671.84, 225,876.40 and 109,129.88 is: 150,605.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,671.84 : 225,876.40 = 109,129.88 : x
  2. Step 2: Convert to fraction form
    163,671.84/225,876.40 = 109,129.88/x
  3. Step 3: Cross multiply
    163,671.84x = 225,876.40 × 109,129.88
  4. Step 4: Simplify right side
    163,671.84x = 24,649,864,718.70
  5. Step 5: Solve for x
    x = 24,649,864,718.70/163,671.84
  6. Step 6: Final answer
    x = 150,605.41

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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.