Home / 170,619.64-256,086.54-86,438.37

Finding the Fourth Proportional to 170,619.64, 256,086.54 and 86,438.37

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Solution

The fourth proportional to 170,619.64, 256,086.54 and 86,438.37 is: 129,737.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,619.64 : 256,086.54 = 86,438.37 : x
  2. Step 2: Convert to fraction form
    170,619.64/256,086.54 = 86,438.37/x
  3. Step 3: Cross multiply
    170,619.64x = 256,086.54 × 86,438.37
  4. Step 4: Simplify right side
    170,619.64x = 22,135,701,653.03
  5. Step 5: Solve for x
    x = 22,135,701,653.03/170,619.64
  6. Step 6: Final answer
    x = 129,737.13

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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.