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Finding the Fourth Proportional to 136,878.66, 205,317.99 and 43,384.41

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Solution

The fourth proportional to 136,878.66, 205,317.99 and 43,384.41 is: 65,076.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,878.66 : 205,317.99 = 43,384.41 : x
  2. Step 2: Convert to fraction form
    136,878.66/205,317.99 = 43,384.41/x
  3. Step 3: Cross multiply
    136,878.66x = 205,317.99 × 43,384.41
  4. Step 4: Simplify right side
    136,878.66x = 8,907,599,858.54
  5. Step 5: Solve for x
    x = 8,907,599,858.54/136,878.66
  6. Step 6: Final answer
    x = 65,076.62

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.