Home / 204,979.20-307,718.40-130,099.20

Finding the Fourth Proportional to 204,979.20, 307,718.40 and 130,099.20

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Solution

The fourth proportional to 204,979.20, 307,718.40 and 130,099.20 is: 195,307.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    204,979.20 : 307,718.40 = 130,099.20 : x
  2. Step 2: Convert to fraction form
    204,979.20/307,718.40 = 130,099.20/x
  3. Step 3: Cross multiply
    204,979.20x = 307,718.40 × 130,099.20
  4. Step 4: Simplify right side
    204,979.20x = 40,033,917,665.28
  5. Step 5: Solve for x
    x = 40,033,917,665.28/204,979.20
  6. Step 6: Final answer
    x = 195,307.22

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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.