Home / 209,117.25-313,499.52-90,699.39

Finding the Fourth Proportional to 209,117.25, 313,499.52 and 90,699.39

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Solution

The fourth proportional to 209,117.25, 313,499.52 and 90,699.39 is: 135,972.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,117.25 : 313,499.52 = 90,699.39 : x
  2. Step 2: Convert to fraction form
    209,117.25/313,499.52 = 90,699.39/x
  3. Step 3: Cross multiply
    209,117.25x = 313,499.52 × 90,699.39
  4. Step 4: Simplify right side
    209,117.25x = 28,434,215,229.29
  5. Step 5: Solve for x
    x = 28,434,215,229.29/209,117.25
  6. Step 6: Final answer
    x = 135,972.60

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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.