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Finding the Fourth Proportional to 117,103.60, 161,603.36 and 63,388.60

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Solution

The fourth proportional to 117,103.60, 161,603.36 and 63,388.60 is: 87,476.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,103.60 : 161,603.36 = 63,388.60 : x
  2. Step 2: Convert to fraction form
    117,103.60/161,603.36 = 63,388.60/x
  3. Step 3: Cross multiply
    117,103.60x = 161,603.36 × 63,388.60
  4. Step 4: Simplify right side
    117,103.60x = 10,243,810,745.70
  5. Step 5: Solve for x
    x = 10,243,810,745.70/117,103.60
  6. Step 6: Final answer
    x = 87,476.48

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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.