Home / 204,879.12-307,315.02-78,485.10

Finding the Fourth Proportional to 204,879.12, 307,315.02 and 78,485.10

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Solution

The fourth proportional to 204,879.12, 307,315.02 and 78,485.10 is: 117,726.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    204,879.12 : 307,315.02 = 78,485.10 : x
  2. Step 2: Convert to fraction form
    204,879.12/307,315.02 = 78,485.10/x
  3. Step 3: Cross multiply
    204,879.12x = 307,315.02 × 78,485.10
  4. Step 4: Simplify right side
    204,879.12x = 24,119,650,076.20
  5. Step 5: Solve for x
    x = 24,119,650,076.20/204,879.12
  6. Step 6: Final answer
    x = 117,726.25

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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.