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Finding the Fourth Proportional to 159,808.72, 239,820.09 and 66,314.56

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Solution

The fourth proportional to 159,808.72, 239,820.09 and 66,314.56 is: 99,516.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,808.72 : 239,820.09 = 66,314.56 : x
  2. Step 2: Convert to fraction form
    159,808.72/239,820.09 = 66,314.56/x
  3. Step 3: Cross multiply
    159,808.72x = 239,820.09 × 66,314.56
  4. Step 4: Simplify right side
    159,808.72x = 15,903,563,747.51
  5. Step 5: Solve for x
    x = 15,903,563,747.51/159,808.72
  6. Step 6: Final answer
    x = 99,516.25

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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.