Home / 121,940.90-183,825.33-113,812.55

Finding the Fourth Proportional to 121,940.90, 183,825.33 and 113,812.55

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Solution

The fourth proportional to 121,940.90, 183,825.33 and 113,812.55 is: 171,571.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,940.90 : 183,825.33 = 113,812.55 : x
  2. Step 2: Convert to fraction form
    121,940.90/183,825.33 = 113,812.55/x
  3. Step 3: Cross multiply
    121,940.90x = 183,825.33 × 113,812.55
  4. Step 4: Simplify right side
    121,940.90x = 20,921,628,992.83
  5. Step 5: Solve for x
    x = 20,921,628,992.83/121,940.90
  6. Step 6: Final answer
    x = 171,571.88

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.