Home / 121,513.12-182,161.20-65,383.36

Finding the Fourth Proportional to 121,513.12, 182,161.20 and 65,383.36

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Solution

The fourth proportional to 121,513.12, 182,161.20 and 65,383.36 is: 98,016.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,513.12 : 182,161.20 = 65,383.36 : x
  2. Step 2: Convert to fraction form
    121,513.12/182,161.20 = 65,383.36/x
  3. Step 3: Cross multiply
    121,513.12x = 182,161.20 × 65,383.36
  4. Step 4: Simplify right side
    121,513.12x = 11,910,311,317.63
  5. Step 5: Solve for x
    x = 11,910,311,317.63/121,513.12
  6. Step 6: Final answer
    x = 98,016.67

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.