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Finding the Fourth Proportional to 118,614, 163,687.44 and 68,313.12

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Solution

The fourth proportional to 118,614, 163,687.44 and 68,313.12 is: 94,272.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,614 : 163,687.44 = 68,313.12 : x
  2. Step 2: Convert to fraction form
    118,614/163,687.44 = 68,313.12/x
  3. Step 3: Cross multiply
    118,614x = 163,687.44 × 68,313.12
  4. Step 4: Simplify right side
    118,614x = 11,181,999,731.21
  5. Step 5: Solve for x
    x = 11,181,999,731.21/118,614
  6. Step 6: Final answer
    x = 94,272.17

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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.