Home / 122,750.96-169,339.11-79,727.39

Finding the Fourth Proportional to 122,750.96, 169,339.11 and 79,727.39

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Solution

The fourth proportional to 122,750.96, 169,339.11 and 79,727.39 is: 109,986.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,750.96 : 169,339.11 = 79,727.39 : x
  2. Step 2: Convert to fraction form
    122,750.96/169,339.11 = 79,727.39/x
  3. Step 3: Cross multiply
    122,750.96x = 169,339.11 × 79,727.39
  4. Step 4: Simplify right side
    122,750.96x = 13,500,965,265.22
  5. Step 5: Solve for x
    x = 13,500,965,265.22/122,750.96
  6. Step 6: Final answer
    x = 109,986.64

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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.