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Finding the Fourth Proportional to 135,443.34, 186,852.83 and 81,698.49

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Solution

The fourth proportional to 135,443.34, 186,852.83 and 81,698.49 is: 112,708.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,443.34 : 186,852.83 = 81,698.49 : x
  2. Step 2: Convert to fraction form
    135,443.34/186,852.83 = 81,698.49/x
  3. Step 3: Cross multiply
    135,443.34x = 186,852.83 × 81,698.49
  4. Step 4: Simplify right side
    135,443.34x = 15,265,593,654.73
  5. Step 5: Solve for x
    x = 15,265,593,654.73/135,443.34
  6. Step 6: Final answer
    x = 112,708.34

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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.