Home / 203,464.13-305,196.20-78,805.13

Finding the Fourth Proportional to 203,464.13, 305,196.20 and 78,805.13

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Solution

The fourth proportional to 203,464.13, 305,196.20 and 78,805.13 is: 118,207.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,464.13 : 305,196.20 = 78,805.13 : x
  2. Step 2: Convert to fraction form
    203,464.13/305,196.20 = 78,805.13/x
  3. Step 3: Cross multiply
    203,464.13x = 305,196.20 × 78,805.13
  4. Step 4: Simplify right side
    203,464.13x = 24,051,024,296.50
  5. Step 5: Solve for x
    x = 24,051,024,296.50/203,464.13
  6. Step 6: Final answer
    x = 118,207.69

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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.