Home / 209,320.20-313,980.30-67,165.20

Finding the Fourth Proportional to 209,320.20, 313,980.30 and 67,165.20

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Solution

The fourth proportional to 209,320.20, 313,980.30 and 67,165.20 is: 100,747.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,320.20 : 313,980.30 = 67,165.20 : x
  2. Step 2: Convert to fraction form
    209,320.20/313,980.30 = 67,165.20/x
  3. Step 3: Cross multiply
    209,320.20x = 313,980.30 × 67,165.20
  4. Step 4: Simplify right side
    209,320.20x = 21,088,549,645.56
  5. Step 5: Solve for x
    x = 21,088,549,645.56/209,320.20
  6. Step 6: Final answer
    x = 100,747.80

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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.