Home / 121,011.82-166,993.43-65,819.76

Finding the Fourth Proportional to 121,011.82, 166,993.43 and 65,819.76

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Solution

The fourth proportional to 121,011.82, 166,993.43 and 65,819.76 is: 90,829.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,011.82 : 166,993.43 = 65,819.76 : x
  2. Step 2: Convert to fraction form
    121,011.82/166,993.43 = 65,819.76/x
  3. Step 3: Cross multiply
    121,011.82x = 166,993.43 × 65,819.76
  4. Step 4: Simplify right side
    121,011.82x = 10,991,466,899.09
  5. Step 5: Solve for x
    x = 10,991,466,899.09/121,011.82
  6. Step 6: Final answer
    x = 90,829.69

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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.