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Finding the Fourth Proportional to 170,728.30, 256,092.45 and 91,996.30

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Solution

The fourth proportional to 170,728.30, 256,092.45 and 91,996.30 is: 137,994.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,728.30 : 256,092.45 = 91,996.30 : x
  2. Step 2: Convert to fraction form
    170,728.30/256,092.45 = 91,996.30/x
  3. Step 3: Cross multiply
    170,728.30x = 256,092.45 × 91,996.30
  4. Step 4: Simplify right side
    170,728.30x = 23,559,557,857.94
  5. Step 5: Solve for x
    x = 23,559,557,857.94/170,728.30
  6. Step 6: Final answer
    x = 137,994.45

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Similar ratio
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1.5x scale

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.