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Finding the Fourth Proportional to 159,956.88, 239,733.72 and 81,090.96

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Solution

The fourth proportional to 159,956.88, 239,733.72 and 81,090.96 is: 121,534.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,956.88 : 239,733.72 = 81,090.96 : x
  2. Step 2: Convert to fraction form
    159,956.88/239,733.72 = 81,090.96/x
  3. Step 3: Cross multiply
    159,956.88x = 239,733.72 × 81,090.96
  4. Step 4: Simplify right side
    159,956.88x = 19,440,237,499.17
  5. Step 5: Solve for x
    x = 19,440,237,499.17/159,956.88
  6. Step 6: Final answer
    x = 121,534.24

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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.