Home / 171,680.43-257,449.37-66,438.75

Finding the Fourth Proportional to 171,680.43, 257,449.37 and 66,438.75

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Solution

The fourth proportional to 171,680.43, 257,449.37 and 66,438.75 is: 99,630.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,680.43 : 257,449.37 = 66,438.75 : x
  2. Step 2: Convert to fraction form
    171,680.43/257,449.37 = 66,438.75/x
  3. Step 3: Cross multiply
    171,680.43x = 257,449.37 × 66,438.75
  4. Step 4: Simplify right side
    171,680.43x = 17,104,613,998.89
  5. Step 5: Solve for x
    x = 17,104,613,998.89/171,680.43
  6. Step 6: Final answer
    x = 99,630.54

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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.