Home / 148,669.36-205,163.87-80,686.38

Finding the Fourth Proportional to 148,669.36, 205,163.87 and 80,686.38

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Solution

The fourth proportional to 148,669.36, 205,163.87 and 80,686.38 is: 111,347.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,669.36 : 205,163.87 = 80,686.38 : x
  2. Step 2: Convert to fraction form
    148,669.36/205,163.87 = 80,686.38/x
  3. Step 3: Cross multiply
    148,669.36x = 205,163.87 × 80,686.38
  4. Step 4: Simplify right side
    148,669.36x = 16,553,930,515.65
  5. Step 5: Solve for x
    x = 16,553,930,515.65/148,669.36
  6. Step 6: Final answer
    x = 111,347.29

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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.