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Finding the Fourth Proportional to 130,871.58, 196,365.69 and 68,527.50

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Solution

The fourth proportional to 130,871.58, 196,365.69 and 68,527.50 is: 102,821.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,871.58 : 196,365.69 = 68,527.50 : x
  2. Step 2: Convert to fraction form
    130,871.58/196,365.69 = 68,527.50/x
  3. Step 3: Cross multiply
    130,871.58x = 196,365.69 × 68,527.50
  4. Step 4: Simplify right side
    130,871.58x = 13,456,449,821.48
  5. Step 5: Solve for x
    x = 13,456,449,821.48/130,871.58
  6. Step 6: Final answer
    x = 102,821.79

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.