Home / 505,985.78-758,977.94-132,008.78

Finding the Fourth Proportional to 505,985.78, 758,977.94 and 132,008.78

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Solution

The fourth proportional to 505,985.78, 758,977.94 and 132,008.78 is: 198,012.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,985.78 : 758,977.94 = 132,008.78 : x
  2. Step 2: Convert to fraction form
    505,985.78/758,977.94 = 132,008.78/x
  3. Step 3: Cross multiply
    505,985.78x = 758,977.94 × 132,008.78
  4. Step 4: Simplify right side
    505,985.78x = 100,191,751,906.31
  5. Step 5: Solve for x
    x = 100,191,751,906.31/505,985.78
  6. Step 6: Final answer
    x = 198,012.98

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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.