Home / 154,391.20-213,101.76-90,749.44

Finding the Fourth Proportional to 154,391.20, 213,101.76 and 90,749.44

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Solution

The fourth proportional to 154,391.20, 213,101.76 and 90,749.44 is: 125,258.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,391.20 : 213,101.76 = 90,749.44 : x
  2. Step 2: Convert to fraction form
    154,391.20/213,101.76 = 90,749.44/x
  3. Step 3: Cross multiply
    154,391.20x = 213,101.76 × 90,749.44
  4. Step 4: Simplify right side
    154,391.20x = 19,338,865,383.01
  5. Step 5: Solve for x
    x = 19,338,865,383.01/154,391.20
  6. Step 6: Final answer
    x = 125,258.86

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1.5x scale

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.