Home / 128,421.15-192,583.83-44,157.48

Finding the Fourth Proportional to 128,421.15, 192,583.83 and 44,157.48

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Solution

The fourth proportional to 128,421.15, 192,583.83 and 44,157.48 is: 66,219.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,421.15 : 192,583.83 = 44,157.48 : x
  2. Step 2: Convert to fraction form
    128,421.15/192,583.83 = 44,157.48/x
  3. Step 3: Cross multiply
    128,421.15x = 192,583.83 × 44,157.48
  4. Step 4: Simplify right side
    128,421.15x = 8,504,016,621.55
  5. Step 5: Solve for x
    x = 8,504,016,621.55/128,421.15
  6. Step 6: Final answer
    x = 66,219.75

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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.