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Finding the Fourth Proportional to 159,404.94, 239,162.75 and 70,720.71

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Solution

The fourth proportional to 159,404.94, 239,162.75 and 70,720.71 is: 106,105.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,404.94 : 239,162.75 = 70,720.71 : x
  2. Step 2: Convert to fraction form
    159,404.94/239,162.75 = 70,720.71/x
  3. Step 3: Cross multiply
    159,404.94x = 239,162.75 × 70,720.71
  4. Step 4: Simplify right side
    159,404.94x = 16,913,759,131.95
  5. Step 5: Solve for x
    x = 16,913,759,131.95/159,404.94
  6. Step 6: Final answer
    x = 106,105.61

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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.