Home / 205,109.90-307,650.26-55,358.72

Finding the Fourth Proportional to 205,109.90, 307,650.26 and 55,358.72

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Solution

The fourth proportional to 205,109.90, 307,650.26 and 55,358.72 is: 83,034.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,109.90 : 307,650.26 = 55,358.72 : x
  2. Step 2: Convert to fraction form
    205,109.90/307,650.26 = 55,358.72/x
  3. Step 3: Cross multiply
    205,109.90x = 307,650.26 × 55,358.72
  4. Step 4: Simplify right side
    205,109.90x = 17,031,122,786.22
  5. Step 5: Solve for x
    x = 17,031,122,786.22/205,109.90
  6. Step 6: Final answer
    x = 83,034.14

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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.