Home / 120,021.50-165,629.67-69,723.74

Finding the Fourth Proportional to 120,021.50, 165,629.67 and 69,723.74

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Solution

The fourth proportional to 120,021.50, 165,629.67 and 69,723.74 is: 96,218.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,021.50 : 165,629.67 = 69,723.74 : x
  2. Step 2: Convert to fraction form
    120,021.50/165,629.67 = 69,723.74/x
  3. Step 3: Cross multiply
    120,021.50x = 165,629.67 × 69,723.74
  4. Step 4: Simplify right side
    120,021.50x = 11,548,320,047.37
  5. Step 5: Solve for x
    x = 11,548,320,047.37/120,021.50
  6. Step 6: Final answer
    x = 96,218.76

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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.