Home / 205,110.20-307,665.30-64,879.80

Finding the Fourth Proportional to 205,110.20, 307,665.30 and 64,879.80

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Solution

The fourth proportional to 205,110.20, 307,665.30 and 64,879.80 is: 97,319.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,110.20 : 307,665.30 = 64,879.80 : x
  2. Step 2: Convert to fraction form
    205,110.20/307,665.30 = 64,879.80/x
  3. Step 3: Cross multiply
    205,110.20x = 307,665.30 × 64,879.80
  4. Step 4: Simplify right side
    205,110.20x = 19,961,263,130.94
  5. Step 5: Solve for x
    x = 19,961,263,130.94/205,110.20
  6. Step 6: Final answer
    x = 97,319.70

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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.