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Finding the Fourth Proportional to 190,478.39, 262,765.01 and 121,600.04

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Solution

The fourth proportional to 190,478.39, 262,765.01 and 121,600.04 is: 167,747.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,478.39 : 262,765.01 = 121,600.04 : x
  2. Step 2: Convert to fraction form
    190,478.39/262,765.01 = 121,600.04/x
  3. Step 3: Cross multiply
    190,478.39x = 262,765.01 × 121,600.04
  4. Step 4: Simplify right side
    190,478.39x = 31,952,234,716.78
  5. Step 5: Solve for x
    x = 31,952,234,716.78/190,478.39
  6. Step 6: Final answer
    x = 167,747.30

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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.