Home / 231,180,786.73-319,075,833.32-137,147,128.30

Finding the Fourth Proportional to 231,180,786.73, 319,075,833.32 and 137,147,128.30

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Solution

The fourth proportional to 231,180,786.73, 319,075,833.32 and 137,147,128.30 is: 189,290,532.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,180,786.73 : 319,075,833.32 = 137,147,128.30 : x
  2. Step 2: Convert to fraction form
    231,180,786.73/319,075,833.32 = 137,147,128.30/x
  3. Step 3: Cross multiply
    231,180,786.73x = 319,075,833.32 × 137,147,128.30
  4. Step 4: Simplify right side
    231,180,786.73x = 43,760,334,249,767,456
  5. Step 5: Solve for x
    x = 43,760,334,249,767,456/231,180,786.73
  6. Step 6: Final answer
    x = 189,290,532.61

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.