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Finding the Fourth Proportional to 157,797.43, 217,750.89 and 86,162.92

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Solution

The fourth proportional to 157,797.43, 217,750.89 and 86,162.92 is: 118,899.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,797.43 : 217,750.89 = 86,162.92 : x
  2. Step 2: Convert to fraction form
    157,797.43/217,750.89 = 86,162.92/x
  3. Step 3: Cross multiply
    157,797.43x = 217,750.89 × 86,162.92
  4. Step 4: Simplify right side
    157,797.43x = 18,762,052,515.00
  5. Step 5: Solve for x
    x = 18,762,052,515.00/157,797.43
  6. Step 6: Final answer
    x = 118,899.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.