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Finding the Fourth Proportional to 127,474.12, 191,211.12 and 38,727.28

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Solution

The fourth proportional to 127,474.12, 191,211.12 and 38,727.28 is: 58,090.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,474.12 : 191,211.12 = 38,727.28 : x
  2. Step 2: Convert to fraction form
    127,474.12/191,211.12 = 38,727.28/x
  3. Step 3: Cross multiply
    127,474.12x = 191,211.12 × 38,727.28
  4. Step 4: Simplify right side
    127,474.12x = 7,405,086,583.35
  5. Step 5: Solve for x
    x = 7,405,086,583.35/127,474.12
  6. Step 6: Final answer
    x = 58,090.90

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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.