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Finding the Fourth Proportional to 104,129.82, 143,591.74 and 89,072.32

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Solution

The fourth proportional to 104,129.82, 143,591.74 and 89,072.32 is: 122,827.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,129.82 : 143,591.74 = 89,072.32 : x
  2. Step 2: Convert to fraction form
    104,129.82/143,591.74 = 89,072.32/x
  3. Step 3: Cross multiply
    104,129.82x = 143,591.74 × 89,072.32
  4. Step 4: Simplify right side
    104,129.82x = 12,790,049,414.64
  5. Step 5: Solve for x
    x = 12,790,049,414.64/104,129.82
  6. Step 6: Final answer
    x = 122,827.92

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1.5x scale

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.