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Finding the Fourth Proportional to 132,493.80, 198,611.10 and 69,346.20

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Solution

The fourth proportional to 132,493.80, 198,611.10 and 69,346.20 is: 103,951.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,493.80 : 198,611.10 = 69,346.20 : x
  2. Step 2: Convert to fraction form
    132,493.80/198,611.10 = 69,346.20/x
  3. Step 3: Cross multiply
    132,493.80x = 198,611.10 × 69,346.20
  4. Step 4: Simplify right side
    132,493.80x = 13,772,925,062.82
  5. Step 5: Solve for x
    x = 13,772,925,062.82/132,493.80
  6. Step 6: Final answer
    x = 103,951.47

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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.