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Finding the Fourth Proportional to 190,479.60, 262,851.48 and 105,608.88

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Solution

The fourth proportional to 190,479.60, 262,851.48 and 105,608.88 is: 145,734.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,479.60 : 262,851.48 = 105,608.88 : x
  2. Step 2: Convert to fraction form
    190,479.60/262,851.48 = 105,608.88/x
  3. Step 3: Cross multiply
    190,479.60x = 262,851.48 × 105,608.88
  4. Step 4: Simplify right side
    190,479.60x = 27,759,450,409.14
  5. Step 5: Solve for x
    x = 27,759,450,409.14/190,479.60
  6. Step 6: Final answer
    x = 145,734.51

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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.