Home / 204,964.80-307,490.40-86,575.20

Finding the Fourth Proportional to 204,964.80, 307,490.40 and 86,575.20

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Solution

The fourth proportional to 204,964.80, 307,490.40 and 86,575.20 is: 129,881.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    204,964.80 : 307,490.40 = 86,575.20 : x
  2. Step 2: Convert to fraction form
    204,964.80/307,490.40 = 86,575.20/x
  3. Step 3: Cross multiply
    204,964.80x = 307,490.40 × 86,575.20
  4. Step 4: Simplify right side
    204,964.80x = 26,621,042,878.08
  5. Step 5: Solve for x
    x = 26,621,042,878.08/204,964.80
  6. Step 6: Final answer
    x = 129,881.05

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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.