Home / 122,918.43-169,627.39-71,940.87

Finding the Fourth Proportional to 122,918.43, 169,627.39 and 71,940.87

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Solution

The fourth proportional to 122,918.43, 169,627.39 and 71,940.87 is: 99,278.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,918.43 : 169,627.39 = 71,940.87 : x
  2. Step 2: Convert to fraction form
    122,918.43/169,627.39 = 71,940.87/x
  3. Step 3: Cross multiply
    122,918.43x = 169,627.39 × 71,940.87
  4. Step 4: Simplify right side
    122,918.43x = 12,203,141,832.58
  5. Step 5: Solve for x
    x = 12,203,141,832.58/122,918.43
  6. Step 6: Final answer
    x = 99,278.37

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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.