Home / 122,279.93-168,760.37-81,441.81

Finding the Fourth Proportional to 122,279.93, 168,760.37 and 81,441.81

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Solution

The fourth proportional to 122,279.93, 168,760.37 and 81,441.81 is: 112,399.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,279.93 : 168,760.37 = 81,441.81 : x
  2. Step 2: Convert to fraction form
    122,279.93/168,760.37 = 81,441.81/x
  3. Step 3: Cross multiply
    122,279.93x = 168,760.37 × 81,441.81
  4. Step 4: Simplify right side
    122,279.93x = 13,744,149,989.07
  5. Step 5: Solve for x
    x = 13,744,149,989.07/122,279.93
  6. Step 6: Final answer
    x = 112,399.07

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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.