Home / 157,917.12-217,919.16-86,299.56

Finding the Fourth Proportional to 157,917.12, 217,919.16 and 86,299.56

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Solution

The fourth proportional to 157,917.12, 217,919.16 and 86,299.56 is: 119,089.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,917.12 : 217,919.16 = 86,299.56 : x
  2. Step 2: Convert to fraction form
    157,917.12/217,919.16 = 86,299.56/x
  3. Step 3: Cross multiply
    157,917.12x = 217,919.16 × 86,299.56
  4. Step 4: Simplify right side
    157,917.12x = 18,806,327,623.57
  5. Step 5: Solve for x
    x = 18,806,327,623.57/157,917.12
  6. Step 6: Final answer
    x = 119,089.86

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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.