Home / 205,412.18-307,921.43-86,920.52

Finding the Fourth Proportional to 205,412.18, 307,921.43 and 86,920.52

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Solution

The fourth proportional to 205,412.18, 307,921.43 and 86,920.52 is: 130,297.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,412.18 : 307,921.43 = 86,920.52 : x
  2. Step 2: Convert to fraction form
    205,412.18/307,921.43 = 86,920.52/x
  3. Step 3: Cross multiply
    205,412.18x = 307,921.43 × 86,920.52
  4. Step 4: Simplify right side
    205,412.18x = 26,764,689,492.44
  5. Step 5: Solve for x
    x = 26,764,689,492.44/205,412.18
  6. Step 6: Final answer
    x = 130,297.48

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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.