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Finding the Fourth Proportional to 141,969.60, 213,059.97 and 67,112.69

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Solution

The fourth proportional to 141,969.60, 213,059.97 and 67,112.69 is: 100,718.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,969.60 : 213,059.97 = 67,112.69 : x
  2. Step 2: Convert to fraction form
    141,969.60/213,059.97 = 67,112.69/x
  3. Step 3: Cross multiply
    141,969.60x = 213,059.97 × 67,112.69
  4. Step 4: Simplify right side
    141,969.60x = 14,299,026,652.72
  5. Step 5: Solve for x
    x = 14,299,026,652.72/141,969.60
  6. Step 6: Final answer
    x = 100,718.93

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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.