Home / 113,998.28-171,032-80,782.60

Finding the Fourth Proportional to 113,998.28, 171,032 and 80,782.60

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Solution

The fourth proportional to 113,998.28, 171,032 and 80,782.60 is: 121,198.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,998.28 : 171,032 = 80,782.60 : x
  2. Step 2: Convert to fraction form
    113,998.28/171,032 = 80,782.60/x
  3. Step 3: Cross multiply
    113,998.28x = 171,032 × 80,782.60
  4. Step 4: Simplify right side
    113,998.28x = 13,816,409,643.20
  5. Step 5: Solve for x
    x = 13,816,409,643.20/113,998.28
  6. Step 6: Final answer
    x = 121,198.40

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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.