Home / 209,203.20-313,628.46-90,785.34

Finding the Fourth Proportional to 209,203.20, 313,628.46 and 90,785.34

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Solution

The fourth proportional to 209,203.20, 313,628.46 and 90,785.34 is: 136,101.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,203.20 : 313,628.46 = 90,785.34 : x
  2. Step 2: Convert to fraction form
    209,203.20/313,628.46 = 90,785.34/x
  3. Step 3: Cross multiply
    209,203.20x = 313,628.46 × 90,785.34
  4. Step 4: Simplify right side
    209,203.20x = 28,472,866,374.78
  5. Step 5: Solve for x
    x = 28,472,866,374.78/209,203.20
  6. Step 6: Final answer
    x = 136,101.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.