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Finding the Fourth Proportional to 149,001.63, 205,616.63 and 81,016.25

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Solution

The fourth proportional to 149,001.63, 205,616.63 and 81,016.25 is: 111,799.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,001.63 : 205,616.63 = 81,016.25 : x
  2. Step 2: Convert to fraction form
    149,001.63/205,616.63 = 81,016.25/x
  3. Step 3: Cross multiply
    149,001.63x = 205,616.63 × 81,016.25
  4. Step 4: Simplify right side
    149,001.63x = 16,658,288,175.57
  5. Step 5: Solve for x
    x = 16,658,288,175.57/149,001.63
  6. Step 6: Final answer
    x = 111,799.37

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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.