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Finding the Fourth Proportional to 159,479.20, 239,218.80 and 70,905.70

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Solution

The fourth proportional to 159,479.20, 239,218.80 and 70,905.70 is: 106,358.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,479.20 : 239,218.80 = 70,905.70 : x
  2. Step 2: Convert to fraction form
    159,479.20/239,218.80 = 70,905.70/x
  3. Step 3: Cross multiply
    159,479.20x = 239,218.80 × 70,905.70
  4. Step 4: Simplify right side
    159,479.20x = 16,961,976,467.16
  5. Step 5: Solve for x
    x = 16,961,976,467.16/159,479.20
  6. Step 6: Final answer
    x = 106,358.55

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1.5x scale

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.