Home / 148,765.09-205,295.18-80,781.52

Finding the Fourth Proportional to 148,765.09, 205,295.18 and 80,781.52

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Solution

The fourth proportional to 148,765.09, 205,295.18 and 80,781.52 is: 111,478.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,765.09 : 205,295.18 = 80,781.52 : x
  2. Step 2: Convert to fraction form
    148,765.09/205,295.18 = 80,781.52/x
  3. Step 3: Cross multiply
    148,765.09x = 205,295.18 × 80,781.52
  4. Step 4: Simplify right side
    148,765.09x = 16,584,055,258.69
  5. Step 5: Solve for x
    x = 16,584,055,258.69/148,765.09
  6. Step 6: Final answer
    x = 111,478.14

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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.