Home / 148,721.15-205,235.75-80,738.26

Finding the Fourth Proportional to 148,721.15, 205,235.75 and 80,738.26

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Solution

The fourth proportional to 148,721.15, 205,235.75 and 80,738.26 is: 111,419.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,721.15 : 205,235.75 = 80,738.26 : x
  2. Step 2: Convert to fraction form
    148,721.15/205,235.75 = 80,738.26/x
  3. Step 3: Cross multiply
    148,721.15x = 205,235.75 × 80,738.26
  4. Step 4: Simplify right side
    148,721.15x = 16,570,377,033.55
  5. Step 5: Solve for x
    x = 16,570,377,033.55/148,721.15
  6. Step 6: Final answer
    x = 111,419.10

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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.