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Finding the Fourth Proportional to 137,744.88, 190,101.60 and 84,065.76

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Solution

The fourth proportional to 137,744.88, 190,101.60 and 84,065.76 is: 116,019.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,744.88 : 190,101.60 = 84,065.76 : x
  2. Step 2: Convert to fraction form
    137,744.88/190,101.60 = 84,065.76/x
  3. Step 3: Cross multiply
    137,744.88x = 190,101.60 × 84,065.76
  4. Step 4: Simplify right side
    137,744.88x = 15,981,035,481.22
  5. Step 5: Solve for x
    x = 15,981,035,481.22/137,744.88
  6. Step 6: Final answer
    x = 116,019.09

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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.