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Finding the Fourth Proportional to 122,630.58, 169,124.82 and 79,567.64

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Solution

The fourth proportional to 122,630.58, 169,124.82 and 79,567.64 is: 109,734.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,630.58 : 169,124.82 = 79,567.64 : x
  2. Step 2: Convert to fraction form
    122,630.58/169,124.82 = 79,567.64/x
  3. Step 3: Cross multiply
    122,630.58x = 169,124.82 × 79,567.64
  4. Step 4: Simplify right side
    122,630.58x = 13,456,862,982.49
  5. Step 5: Solve for x
    x = 13,456,862,982.49/122,630.58
  6. Step 6: Final answer
    x = 109,734.97

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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.