Home / 211,492.85-317,165.49-85,100.35

Finding the Fourth Proportional to 211,492.85, 317,165.49 and 85,100.35

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Solution

The fourth proportional to 211,492.85, 317,165.49 and 85,100.35 is: 127,620.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,492.85 : 317,165.49 = 85,100.35 : x
  2. Step 2: Convert to fraction form
    211,492.85/317,165.49 = 85,100.35/x
  3. Step 3: Cross multiply
    211,492.85x = 317,165.49 × 85,100.35
  4. Step 4: Simplify right side
    211,492.85x = 26,990,892,621.09
  5. Step 5: Solve for x
    x = 26,990,892,621.09/211,492.85
  6. Step 6: Final answer
    x = 127,620.83

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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.