Home / 212,792.09-319,264.34-91,161.59

Finding the Fourth Proportional to 212,792.09, 319,264.34 and 91,161.59

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Solution

The fourth proportional to 212,792.09, 319,264.34 and 91,161.59 is: 136,775.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,792.09 : 319,264.34 = 91,161.59 : x
  2. Step 2: Convert to fraction form
    212,792.09/319,264.34 = 91,161.59/x
  3. Step 3: Cross multiply
    212,792.09x = 319,264.34 × 91,161.59
  4. Step 4: Simplify right side
    212,792.09x = 29,104,645,092.60
  5. Step 5: Solve for x
    x = 29,104,645,092.60/212,792.09
  6. Step 6: Final answer
    x = 136,775.03

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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.