Home / 203,782.32-305,683.20-85,457.52

Finding the Fourth Proportional to 203,782.32, 305,683.20 and 85,457.52

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Solution

The fourth proportional to 203,782.32, 305,683.20 and 85,457.52 is: 128,190.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,782.32 : 305,683.20 = 85,457.52 : x
  2. Step 2: Convert to fraction form
    203,782.32/305,683.20 = 85,457.52/x
  3. Step 3: Cross multiply
    203,782.32x = 305,683.20 × 85,457.52
  4. Step 4: Simplify right side
    203,782.32x = 26,122,928,177.66
  5. Step 5: Solve for x
    x = 26,122,928,177.66/203,782.32
  6. Step 6: Final answer
    x = 128,190.36

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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.