Home / 213,405.12-320,100.75-63,646.65

Finding the Fourth Proportional to 213,405.12, 320,100.75 and 63,646.65

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Solution

The fourth proportional to 213,405.12, 320,100.75 and 63,646.65 is: 95,467.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,405.12 : 320,100.75 = 63,646.65 : x
  2. Step 2: Convert to fraction form
    213,405.12/320,100.75 = 63,646.65/x
  3. Step 3: Cross multiply
    213,405.12x = 320,100.75 × 63,646.65
  4. Step 4: Simplify right side
    213,405.12x = 20,373,340,399.99
  5. Step 5: Solve for x
    x = 20,373,340,399.99/213,405.12
  6. Step 6: Final answer
    x = 95,467.91

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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.