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Finding the Fourth Proportional to 159,630, 239,446.20 and 70,859.64

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Solution

The fourth proportional to 159,630, 239,446.20 and 70,859.64 is: 106,289.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,630 : 239,446.20 = 70,859.64 : x
  2. Step 2: Convert to fraction form
    159,630/239,446.20 = 70,859.64/x
  3. Step 3: Cross multiply
    159,630x = 239,446.20 × 70,859.64
  4. Step 4: Simplify right side
    159,630x = 16,967,071,531.37
  5. Step 5: Solve for x
    x = 16,967,071,531.37/159,630
  6. Step 6: Final answer
    x = 106,289.99

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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.