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Finding the Fourth Proportional to 148,493.62, 204,921.39 and 81,425.62

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Solution

The fourth proportional to 148,493.62, 204,921.39 and 81,425.62 is: 112,367.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,493.62 : 204,921.39 = 81,425.62 : x
  2. Step 2: Convert to fraction form
    148,493.62/204,921.39 = 81,425.62/x
  3. Step 3: Cross multiply
    148,493.62x = 204,921.39 × 81,425.62
  4. Step 4: Simplify right side
    148,493.62x = 16,685,851,232.01
  5. Step 5: Solve for x
    x = 16,685,851,232.01/148,493.62
  6. Step 6: Final answer
    x = 112,367.46

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1.5x scale

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.