Home / 131,125.12-196,871.70-67,128.97

Finding the Fourth Proportional to 131,125.12, 196,871.70 and 67,128.97

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Solution

The fourth proportional to 131,125.12, 196,871.70 and 67,128.97 is: 100,787.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,125.12 : 196,871.70 = 67,128.97 : x
  2. Step 2: Convert to fraction form
    131,125.12/196,871.70 = 67,128.97/x
  3. Step 3: Cross multiply
    131,125.12x = 196,871.70 × 67,128.97
  4. Step 4: Simplify right side
    131,125.12x = 13,215,795,303.23
  5. Step 5: Solve for x
    x = 13,215,795,303.23/131,125.12
  6. Step 6: Final answer
    x = 100,787.67

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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.