Home / 205,181.80-307,772.70-135,140.20

Finding the Fourth Proportional to 205,181.80, 307,772.70 and 135,140.20

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Solution

The fourth proportional to 205,181.80, 307,772.70 and 135,140.20 is: 202,710.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,181.80 : 307,772.70 = 135,140.20 : x
  2. Step 2: Convert to fraction form
    205,181.80/307,772.70 = 135,140.20/x
  3. Step 3: Cross multiply
    205,181.80x = 307,772.70 × 135,140.20
  4. Step 4: Simplify right side
    205,181.80x = 41,592,464,232.54
  5. Step 5: Solve for x
    x = 41,592,464,232.54/205,181.80
  6. Step 6: Final answer
    x = 202,710.30

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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.