Home / 80,332.05-120,371.31-65,265.66

Finding the Fourth Proportional to 80,332.05, 120,371.31 and 65,265.66

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Solution

The fourth proportional to 80,332.05, 120,371.31 and 65,265.66 is: 97,795.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,332.05 : 120,371.31 = 65,265.66 : x
  2. Step 2: Convert to fraction form
    80,332.05/120,371.31 = 65,265.66/x
  3. Step 3: Cross multiply
    80,332.05x = 120,371.31 × 65,265.66
  4. Step 4: Simplify right side
    80,332.05x = 7,856,112,992.21
  5. Step 5: Solve for x
    x = 7,856,112,992.21/80,332.05
  6. Step 6: Final answer
    x = 97,795.50

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1.5x scale

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.