Home / 236,865.90-326,861-129,414.54

Finding the Fourth Proportional to 236,865.90, 326,861 and 129,414.54

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Solution

The fourth proportional to 236,865.90, 326,861 and 129,414.54 is: 178,584.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,865.90 : 326,861 = 129,414.54 : x
  2. Step 2: Convert to fraction form
    236,865.90/326,861 = 129,414.54/x
  3. Step 3: Cross multiply
    236,865.90x = 326,861 × 129,414.54
  4. Step 4: Simplify right side
    236,865.90x = 42,300,565,958.94
  5. Step 5: Solve for x
    x = 42,300,565,958.94/236,865.90
  6. Step 6: Final answer
    x = 178,584.45

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.