Home / 141,206.20-211,809.30-85,109.65

Finding the Fourth Proportional to 141,206.20, 211,809.30 and 85,109.65

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Solution

The fourth proportional to 141,206.20, 211,809.30 and 85,109.65 is: 127,664.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,206.20 : 211,809.30 = 85,109.65 : x
  2. Step 2: Convert to fraction form
    141,206.20/211,809.30 = 85,109.65/x
  3. Step 3: Cross multiply
    141,206.20x = 211,809.30 × 85,109.65
  4. Step 4: Simplify right side
    141,206.20x = 18,027,015,389.75
  5. Step 5: Solve for x
    x = 18,027,015,389.75/141,206.20
  6. Step 6: Final answer
    x = 127,664.48

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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.