Home / 86,782,590.30-129,407,151.44-86,003,668.38

Finding the Fourth Proportional to 86,782,590.30, 129,407,151.44 and 86,003,668.38

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Solution

The fourth proportional to 86,782,590.30, 129,407,151.44 and 86,003,668.38 is: 128,245,650.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,782,590.30 : 129,407,151.44 = 86,003,668.38 : x
  2. Step 2: Convert to fraction form
    86,782,590.30/129,407,151.44 = 86,003,668.38/x
  3. Step 3: Cross multiply
    86,782,590.30x = 129,407,151.44 × 86,003,668.38
  4. Step 4: Simplify right side
    86,782,590.30x = 11,129,489,738,446,198
  5. Step 5: Solve for x
    x = 11,129,489,738,446,198/86,782,590.30
  6. Step 6: Final answer
    x = 128,245,650.42

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.