Home / 148,815.29-205,367.31-80,833.58

Finding the Fourth Proportional to 148,815.29, 205,367.31 and 80,833.58

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Solution

The fourth proportional to 148,815.29, 205,367.31 and 80,833.58 is: 111,551.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,815.29 : 205,367.31 = 80,833.58 : x
  2. Step 2: Convert to fraction form
    148,815.29/205,367.31 = 80,833.58/x
  3. Step 3: Cross multiply
    148,815.29x = 205,367.31 × 80,833.58
  4. Step 4: Simplify right side
    148,815.29x = 16,600,575,395.69
  5. Step 5: Solve for x
    x = 16,600,575,395.69/148,815.29
  6. Step 6: Final answer
    x = 111,551.55

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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.