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Finding the Fourth Proportional to 159,670.70, 239,419.65 and 66,185.90

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Solution

The fourth proportional to 159,670.70, 239,419.65 and 66,185.90 is: 99,243.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,670.70 : 239,419.65 = 66,185.90 : x
  2. Step 2: Convert to fraction form
    159,670.70/239,419.65 = 66,185.90/x
  3. Step 3: Cross multiply
    159,670.70x = 239,419.65 × 66,185.90
  4. Step 4: Simplify right side
    159,670.70x = 15,846,205,012.94
  5. Step 5: Solve for x
    x = 15,846,205,012.94/159,670.70
  6. Step 6: Final answer
    x = 99,243.04

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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.