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Finding the Fourth Proportional to 148,995.54, 205,611.57 and 81,011.97

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Solution

The fourth proportional to 148,995.54, 205,611.57 and 81,011.97 is: 111,795.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,995.54 : 205,611.57 = 81,011.97 : x
  2. Step 2: Convert to fraction form
    148,995.54/205,611.57 = 81,011.97/x
  3. Step 3: Cross multiply
    148,995.54x = 205,611.57 × 81,011.97
  4. Step 4: Simplify right side
    148,995.54x = 16,656,998,340.49
  5. Step 5: Solve for x
    x = 16,656,998,340.49/148,995.54
  6. Step 6: Final answer
    x = 111,795.28

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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.