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Finding the Fourth Proportional to 188,003.88, 259,443.95 and 103,120.34

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Solution

The fourth proportional to 188,003.88, 259,443.95 and 103,120.34 is: 142,305.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,003.88 : 259,443.95 = 103,120.34 : x
  2. Step 2: Convert to fraction form
    188,003.88/259,443.95 = 103,120.34/x
  3. Step 3: Cross multiply
    188,003.88x = 259,443.95 × 103,120.34
  4. Step 4: Simplify right side
    188,003.88x = 26,753,946,522.12
  5. Step 5: Solve for x
    x = 26,753,946,522.12/188,003.88
  6. Step 6: Final answer
    x = 142,305.29

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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.