Home / 209,118.11-313,500.82-90,700.26

Finding the Fourth Proportional to 209,118.11, 313,500.82 and 90,700.26

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Solution

The fourth proportional to 209,118.11, 313,500.82 and 90,700.26 is: 135,973.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,118.11 : 313,500.82 = 90,700.26 : x
  2. Step 2: Convert to fraction form
    209,118.11/313,500.82 = 90,700.26/x
  3. Step 3: Cross multiply
    209,118.11x = 313,500.82 × 90,700.26
  4. Step 4: Simplify right side
    209,118.11x = 28,434,604,316.71
  5. Step 5: Solve for x
    x = 28,434,604,316.71/209,118.11
  6. Step 6: Final answer
    x = 135,973.90

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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.