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Finding the Fourth Proportional to 159,616.40, 239,424.60 and 103,629.20

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Solution

The fourth proportional to 159,616.40, 239,424.60 and 103,629.20 is: 155,443.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,616.40 : 239,424.60 = 103,629.20 : x
  2. Step 2: Convert to fraction form
    159,616.40/239,424.60 = 103,629.20/x
  3. Step 3: Cross multiply
    159,616.40x = 239,424.60 × 103,629.20
  4. Step 4: Simplify right side
    159,616.40x = 24,811,379,758.32
  5. Step 5: Solve for x
    x = 24,811,379,758.32/159,616.40
  6. Step 6: Final answer
    x = 155,443.80

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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.