Home / 209,114.92-313,496.05-90,697.07

Finding the Fourth Proportional to 209,114.92, 313,496.05 and 90,697.07

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Solution

The fourth proportional to 209,114.92, 313,496.05 and 90,697.07 is: 135,969.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,114.92 : 313,496.05 = 90,697.07 : x
  2. Step 2: Convert to fraction form
    209,114.92/313,496.05 = 90,697.07/x
  3. Step 3: Cross multiply
    209,114.92x = 313,496.05 × 90,697.07
  4. Step 4: Simplify right side
    209,114.92x = 28,433,171,900.13
  5. Step 5: Solve for x
    x = 28,433,171,900.13/209,114.92
  6. Step 6: Final answer
    x = 135,969.12

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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.