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Finding the Fourth Proportional to 168,749.20, 253,123.80 and 158,907.70

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Solution

The fourth proportional to 168,749.20, 253,123.80 and 158,907.70 is: 238,361.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,749.20 : 253,123.80 = 158,907.70 : x
  2. Step 2: Convert to fraction form
    168,749.20/253,123.80 = 158,907.70/x
  3. Step 3: Cross multiply
    168,749.20x = 253,123.80 × 158,907.70
  4. Step 4: Simplify right side
    168,749.20x = 40,223,320,873.26
  5. Step 5: Solve for x
    x = 40,223,320,873.26/168,749.20
  6. Step 6: Final answer
    x = 238,361.55

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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.