Home / 205,048.40-307,572.60-72,078.80

Finding the Fourth Proportional to 205,048.40, 307,572.60 and 72,078.80

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Solution

The fourth proportional to 205,048.40, 307,572.60 and 72,078.80 is: 108,118.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,048.40 : 307,572.60 = 72,078.80 : x
  2. Step 2: Convert to fraction form
    205,048.40/307,572.60 = 72,078.80/x
  3. Step 3: Cross multiply
    205,048.40x = 307,572.60 × 72,078.80
  4. Step 4: Simplify right side
    205,048.40x = 22,169,463,920.88
  5. Step 5: Solve for x
    x = 22,169,463,920.88/205,048.40
  6. Step 6: Final answer
    x = 108,118.20

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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.