Home / 203,940.24-305,856.90-91,557.60

Finding the Fourth Proportional to 203,940.24, 305,856.90 and 91,557.60

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Solution

The fourth proportional to 203,940.24, 305,856.90 and 91,557.60 is: 137,312.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,940.24 : 305,856.90 = 91,557.60 : x
  2. Step 2: Convert to fraction form
    203,940.24/305,856.90 = 91,557.60/x
  3. Step 3: Cross multiply
    203,940.24x = 305,856.90 × 91,557.60
  4. Step 4: Simplify right side
    203,940.24x = 28,003,523,707.44
  5. Step 5: Solve for x
    x = 28,003,523,707.44/203,940.24
  6. Step 6: Final answer
    x = 137,312.40

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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.