Home / 213,020,121.20-319,530,181.80-83,561,093.60

Finding the Fourth Proportional to 213,020,121.20, 319,530,181.80 and 83,561,093.60

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Solution

The fourth proportional to 213,020,121.20, 319,530,181.80 and 83,561,093.60 is: 125,341,640.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,020,121.20 : 319,530,181.80 = 83,561,093.60 : x
  2. Step 2: Convert to fraction form
    213,020,121.20/319,530,181.80 = 83,561,093.60/x
  3. Step 3: Cross multiply
    213,020,121.20x = 319,530,181.80 × 83,561,093.60
  4. Step 4: Simplify right side
    213,020,121.20x = 26,700,291,429,414,816
  5. Step 5: Solve for x
    x = 26,700,291,429,414,816/213,020,121.20
  6. Step 6: Final answer
    x = 125,341,640.40

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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.