Home / 209,150.12-313,548.86-90,732.18

Finding the Fourth Proportional to 209,150.12, 313,548.86 and 90,732.18

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Solution

The fourth proportional to 209,150.12, 313,548.86 and 90,732.18 is: 136,021.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,150.12 : 313,548.86 = 90,732.18 : x
  2. Step 2: Convert to fraction form
    209,150.12/313,548.86 = 90,732.18/x
  3. Step 3: Cross multiply
    209,150.12x = 313,548.86 × 90,732.18
  4. Step 4: Simplify right side
    209,150.12x = 28,448,971,604.31
  5. Step 5: Solve for x
    x = 28,448,971,604.31/209,150.12
  6. Step 6: Final answer
    x = 136,021.78

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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.