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Finding the Fourth Proportional to 157,372.40, 236,128.34 and 82,474.72

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Solution

The fourth proportional to 157,372.40, 236,128.34 and 82,474.72 is: 123,748.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,372.40 : 236,128.34 = 82,474.72 : x
  2. Step 2: Convert to fraction form
    157,372.40/236,128.34 = 82,474.72/x
  3. Step 3: Cross multiply
    157,372.40x = 236,128.34 × 82,474.72
  4. Step 4: Simplify right side
    157,372.40x = 19,474,618,725.56
  5. Step 5: Solve for x
    x = 19,474,618,725.56/157,372.40
  6. Step 6: Final answer
    x = 123,748.63

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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.