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Finding the Fourth Proportional to 140,556.66, 210,856.91 and 45,764.46

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Solution

The fourth proportional to 140,556.66, 210,856.91 and 45,764.46 is: 68,653.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,556.66 : 210,856.91 = 45,764.46 : x
  2. Step 2: Convert to fraction form
    140,556.66/210,856.91 = 45,764.46/x
  3. Step 3: Cross multiply
    140,556.66x = 210,856.91 × 45,764.46
  4. Step 4: Simplify right side
    140,556.66x = 9,649,752,394.60
  5. Step 5: Solve for x
    x = 9,649,752,394.60/140,556.66
  6. Step 6: Final answer
    x = 68,653.83

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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.