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Finding the Fourth Proportional to 159,818.88, 239,741.76 and 54,645.12

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Solution

The fourth proportional to 159,818.88, 239,741.76 and 54,645.12 is: 81,972.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,818.88 : 239,741.76 = 54,645.12 : x
  2. Step 2: Convert to fraction form
    159,818.88/239,741.76 = 54,645.12/x
  3. Step 3: Cross multiply
    159,818.88x = 239,741.76 × 54,645.12
  4. Step 4: Simplify right side
    159,818.88x = 13,100,717,244.21
  5. Step 5: Solve for x
    x = 13,100,717,244.21/159,818.88
  6. Step 6: Final answer
    x = 81,972.28

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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.