Home / 154,512.72-213,177.60-86,519.52

Finding the Fourth Proportional to 154,512.72, 213,177.60 and 86,519.52

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Solution

The fourth proportional to 154,512.72, 213,177.60 and 86,519.52 is: 119,368.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,512.72 : 213,177.60 = 86,519.52 : x
  2. Step 2: Convert to fraction form
    154,512.72/213,177.60 = 86,519.52/x
  3. Step 3: Cross multiply
    154,512.72x = 213,177.60 × 86,519.52
  4. Step 4: Simplify right side
    154,512.72x = 18,444,023,626.75
  5. Step 5: Solve for x
    x = 18,444,023,626.75/154,512.72
  6. Step 6: Final answer
    x = 119,368.97

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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.