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Finding the Fourth Proportional to 159,690.50, 239,466.21 and 45,813.18

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Solution

The fourth proportional to 159,690.50, 239,466.21 and 45,813.18 is: 68,699.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,690.50 : 239,466.21 = 45,813.18 : x
  2. Step 2: Convert to fraction form
    159,690.50/239,466.21 = 45,813.18/x
  3. Step 3: Cross multiply
    159,690.50x = 239,466.21 × 45,813.18
  4. Step 4: Simplify right side
    159,690.50x = 10,970,708,353.58
  5. Step 5: Solve for x
    x = 10,970,708,353.58/159,690.50
  6. Step 6: Final answer
    x = 68,699.82

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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.