Home / 186,997.61-258,078.86-105,328.55

Finding the Fourth Proportional to 186,997.61, 258,078.86 and 105,328.55

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Solution

The fourth proportional to 186,997.61, 258,078.86 and 105,328.55 is: 145,365.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,997.61 : 258,078.86 = 105,328.55 : x
  2. Step 2: Convert to fraction form
    186,997.61/258,078.86 = 105,328.55/x
  3. Step 3: Cross multiply
    186,997.61x = 258,078.86 × 105,328.55
  4. Step 4: Simplify right side
    186,997.61x = 27,183,072,622.99
  5. Step 5: Solve for x
    x = 27,183,072,622.99/186,997.61
  6. Step 6: Final answer
    x = 145,365.88

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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.