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Finding the Fourth Proportional to 76,144.54, 114,208.56 and 19,990.28

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Solution

The fourth proportional to 76,144.54, 114,208.56 and 19,990.28 is: 29,983.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,144.54 : 114,208.56 = 19,990.28 : x
  2. Step 2: Convert to fraction form
    76,144.54/114,208.56 = 19,990.28/x
  3. Step 3: Cross multiply
    76,144.54x = 114,208.56 × 19,990.28
  4. Step 4: Simplify right side
    76,144.54x = 2,283,061,092.80
  5. Step 5: Solve for x
    x = 2,283,061,092.80/76,144.54
  6. Step 6: Final answer
    x = 29,983.25

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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.