Home / 80,166.15-120,256.11-21,001.82

Finding the Fourth Proportional to 80,166.15, 120,256.11 and 21,001.82

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Solution

The fourth proportional to 80,166.15, 120,256.11 and 21,001.82 is: 31,504.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,166.15 : 120,256.11 = 21,001.82 : x
  2. Step 2: Convert to fraction form
    80,166.15/120,256.11 = 21,001.82/x
  3. Step 3: Cross multiply
    80,166.15x = 120,256.11 × 21,001.82
  4. Step 4: Simplify right side
    80,166.15x = 2,525,596,574.84
  5. Step 5: Solve for x
    x = 2,525,596,574.84/80,166.15
  6. Step 6: Final answer
    x = 31,504.53

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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.