Home / 157,929.48-217,942.21-86,309.54

Finding the Fourth Proportional to 157,929.48, 217,942.21 and 86,309.54

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Solution

The fourth proportional to 157,929.48, 217,942.21 and 86,309.54 is: 119,106.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,929.48 : 217,942.21 = 86,309.54 : x
  2. Step 2: Convert to fraction form
    157,929.48/217,942.21 = 86,309.54/x
  3. Step 3: Cross multiply
    157,929.48x = 217,942.21 × 86,309.54
  4. Step 4: Simplify right side
    157,929.48x = 18,810,491,891.68
  5. Step 5: Solve for x
    x = 18,810,491,891.68/157,929.48
  6. Step 6: Final answer
    x = 119,106.91

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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.