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Finding the Fourth Proportional to 104,696.21, 144,403.43 and 66,422.79

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Solution

The fourth proportional to 104,696.21, 144,403.43 and 66,422.79 is: 91,614.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,696.21 : 144,403.43 = 66,422.79 : x
  2. Step 2: Convert to fraction form
    104,696.21/144,403.43 = 66,422.79/x
  3. Step 3: Cross multiply
    104,696.21x = 144,403.43 × 66,422.79
  4. Step 4: Simplify right side
    104,696.21x = 9,591,678,374.06
  5. Step 5: Solve for x
    x = 9,591,678,374.06/104,696.21
  6. Step 6: Final answer
    x = 91,614.38

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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.