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Finding the Fourth Proportional to 159,486.70, 239,230.05 and 70,913.20

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Solution

The fourth proportional to 159,486.70, 239,230.05 and 70,913.20 is: 106,369.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,486.70 : 239,230.05 = 70,913.20 : x
  2. Step 2: Convert to fraction form
    159,486.70/239,230.05 = 70,913.20/x
  3. Step 3: Cross multiply
    159,486.70x = 239,230.05 × 70,913.20
  4. Step 4: Simplify right side
    159,486.70x = 16,964,568,381.66
  5. Step 5: Solve for x
    x = 16,964,568,381.66/159,486.70
  6. Step 6: Final answer
    x = 106,369.80

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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.