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Finding the Fourth Proportional to 140,556.95, 210,777.43 and 53,989.74

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Solution

The fourth proportional to 140,556.95, 210,777.43 and 53,989.74 is: 80,962.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,556.95 : 210,777.43 = 53,989.74 : x
  2. Step 2: Convert to fraction form
    140,556.95/210,777.43 = 53,989.74/x
  3. Step 3: Cross multiply
    140,556.95x = 210,777.43 × 53,989.74
  4. Step 4: Simplify right side
    140,556.95x = 11,379,818,508.59
  5. Step 5: Solve for x
    x = 11,379,818,508.59/140,556.95
  6. Step 6: Final answer
    x = 80,962.33

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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.