Home / 211,774.82-317,416.05-78,570.11

Finding the Fourth Proportional to 211,774.82, 317,416.05 and 78,570.11

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Solution

The fourth proportional to 211,774.82, 317,416.05 and 78,570.11 is: 117,763.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,774.82 : 317,416.05 = 78,570.11 : x
  2. Step 2: Convert to fraction form
    211,774.82/317,416.05 = 78,570.11/x
  3. Step 3: Cross multiply
    211,774.82x = 317,416.05 × 78,570.11
  4. Step 4: Simplify right side
    211,774.82x = 24,939,414,757.81
  5. Step 5: Solve for x
    x = 24,939,414,757.81/211,774.82
  6. Step 6: Final answer
    x = 117,763.84

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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.