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Finding the Fourth Proportional to 118,961.90, 164,081.35 and 101,028.50

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Solution

The fourth proportional to 118,961.90, 164,081.35 and 101,028.50 is: 139,346.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,961.90 : 164,081.35 = 101,028.50 : x
  2. Step 2: Convert to fraction form
    118,961.90/164,081.35 = 101,028.50/x
  3. Step 3: Cross multiply
    118,961.90x = 164,081.35 × 101,028.50
  4. Step 4: Simplify right side
    118,961.90x = 16,576,892,668.48
  5. Step 5: Solve for x
    x = 16,576,892,668.48/118,961.90
  6. Step 6: Final answer
    x = 139,346.23

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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.