Home / 205,331.40-307,851.30-78,922.80

Finding the Fourth Proportional to 205,331.40, 307,851.30 and 78,922.80

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Solution

The fourth proportional to 205,331.40, 307,851.30 and 78,922.80 is: 118,328.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,331.40 : 307,851.30 = 78,922.80 : x
  2. Step 2: Convert to fraction form
    205,331.40/307,851.30 = 78,922.80/x
  3. Step 3: Cross multiply
    205,331.40x = 307,851.30 × 78,922.80
  4. Step 4: Simplify right side
    205,331.40x = 24,296,486,579.64
  5. Step 5: Solve for x
    x = 24,296,486,579.64/205,331.40
  6. Step 6: Final answer
    x = 118,328.16

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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.