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Finding the Fourth Proportional to 159,612.40, 239,418.60 and 103,625.20

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Solution

The fourth proportional to 159,612.40, 239,418.60 and 103,625.20 is: 155,437.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,612.40 : 239,418.60 = 103,625.20 : x
  2. Step 2: Convert to fraction form
    159,612.40/239,418.60 = 103,625.20/x
  3. Step 3: Cross multiply
    159,612.40x = 239,418.60 × 103,625.20
  4. Step 4: Simplify right side
    159,612.40x = 24,809,800,308.72
  5. Step 5: Solve for x
    x = 24,809,800,308.72/159,612.40
  6. Step 6: Final answer
    x = 155,437.80

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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.