Home / 203,720.60-305,597.24-77,421.35

Finding the Fourth Proportional to 203,720.60, 305,597.24 and 77,421.35

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Solution

The fourth proportional to 203,720.60, 305,597.24 and 77,421.35 is: 116,138.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,720.60 : 305,597.24 = 77,421.35 : x
  2. Step 2: Convert to fraction form
    203,720.60/305,597.24 = 77,421.35/x
  3. Step 3: Cross multiply
    203,720.60x = 305,597.24 × 77,421.35
  4. Step 4: Simplify right side
    203,720.60x = 23,659,751,544.29
  5. Step 5: Solve for x
    x = 23,659,751,544.29/203,720.60
  6. Step 6: Final answer
    x = 116,138.24

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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.