Home / 211,810.50-317,847.06-123,105.78

Finding the Fourth Proportional to 211,810.50, 317,847.06 and 123,105.78

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Solution

The fourth proportional to 211,810.50, 317,847.06 and 123,105.78 is: 184,734.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,810.50 : 317,847.06 = 123,105.78 : x
  2. Step 2: Convert to fraction form
    211,810.50/317,847.06 = 123,105.78/x
  3. Step 3: Cross multiply
    211,810.50x = 317,847.06 × 123,105.78
  4. Step 4: Simplify right side
    211,810.50x = 39,128,810,242.01
  5. Step 5: Solve for x
    x = 39,128,810,242.01/211,810.50
  6. Step 6: Final answer
    x = 184,734.99

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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.