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Finding the Fourth Proportional to 127,375.74, 190,811.31 and 87,296.22

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Solution

The fourth proportional to 127,375.74, 190,811.31 and 87,296.22 is: 130,771.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,375.74 : 190,811.31 = 87,296.22 : x
  2. Step 2: Convert to fraction form
    127,375.74/190,811.31 = 87,296.22/x
  3. Step 3: Cross multiply
    127,375.74x = 190,811.31 × 87,296.22
  4. Step 4: Simplify right side
    127,375.74x = 16,657,106,096.25
  5. Step 5: Solve for x
    x = 16,657,106,096.25/127,375.74
  6. Step 6: Final answer
    x = 130,771.42

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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.