Home / 204,985.80-307,536.30-99,808.20

Finding the Fourth Proportional to 204,985.80, 307,536.30 and 99,808.20

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Solution

The fourth proportional to 204,985.80, 307,536.30 and 99,808.20 is: 149,740.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    204,985.80 : 307,536.30 = 99,808.20 : x
  2. Step 2: Convert to fraction form
    204,985.80/307,536.30 = 99,808.20/x
  3. Step 3: Cross multiply
    204,985.80x = 307,536.30 × 99,808.20
  4. Step 4: Simplify right side
    204,985.80x = 30,694,644,537.66
  5. Step 5: Solve for x
    x = 30,694,644,537.66/204,985.80
  6. Step 6: Final answer
    x = 149,740.35

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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.