Home / 190,398.31-262,778.61-121,517.50

Finding the Fourth Proportional to 190,398.31, 262,778.61 and 121,517.50

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Solution

The fourth proportional to 190,398.31, 262,778.61 and 121,517.50 is: 167,712.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,398.31 : 262,778.61 = 121,517.50 : x
  2. Step 2: Convert to fraction form
    190,398.31/262,778.61 = 121,517.50/x
  3. Step 3: Cross multiply
    190,398.31x = 262,778.61 × 121,517.50
  4. Step 4: Simplify right side
    190,398.31x = 31,932,199,740.68
  5. Step 5: Solve for x
    x = 31,932,199,740.68/190,398.31
  6. Step 6: Final answer
    x = 167,712.62

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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.