Home / 154,953.90-213,818.76-86,961.69

Finding the Fourth Proportional to 154,953.90, 213,818.76 and 86,961.69

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Solution

The fourth proportional to 154,953.90, 213,818.76 and 86,961.69 is: 119,997.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,953.90 : 213,818.76 = 86,961.69 : x
  2. Step 2: Convert to fraction form
    154,953.90/213,818.76 = 86,961.69/x
  3. Step 3: Cross multiply
    154,953.90x = 213,818.76 × 86,961.69
  4. Step 4: Simplify right side
    154,953.90x = 18,594,040,723.30
  5. Step 5: Solve for x
    x = 18,594,040,723.30/154,953.90
  6. Step 6: Final answer
    x = 119,997.24

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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.