Home / 211,439.48-317,080.20-85,037.06

Finding the Fourth Proportional to 211,439.48, 317,080.20 and 85,037.06

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Solution

The fourth proportional to 211,439.48, 317,080.20 and 85,037.06 is: 127,523.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,439.48 : 317,080.20 = 85,037.06 : x
  2. Step 2: Convert to fraction form
    211,439.48/317,080.20 = 85,037.06/x
  3. Step 3: Cross multiply
    211,439.48x = 317,080.20 × 85,037.06
  4. Step 4: Simplify right side
    211,439.48x = 26,963,567,992.21
  5. Step 5: Solve for x
    x = 26,963,567,992.21/211,439.48
  6. Step 6: Final answer
    x = 127,523.81

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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.