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Finding the Fourth Proportional to 159,881.22, 239,773.74 and 131,731.50

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Solution

The fourth proportional to 159,881.22, 239,773.74 and 131,731.50 is: 197,557.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,881.22 : 239,773.74 = 131,731.50 : x
  2. Step 2: Convert to fraction form
    159,881.22/239,773.74 = 131,731.50/x
  3. Step 3: Cross multiply
    159,881.22x = 239,773.74 × 131,731.50
  4. Step 4: Simplify right side
    159,881.22x = 31,585,754,430.81
  5. Step 5: Solve for x
    x = 31,585,754,430.81/159,881.22
  6. Step 6: Final answer
    x = 197,557.63

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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.