Home / 130,986.90-196,340.46-74,705.82

Finding the Fourth Proportional to 130,986.90, 196,340.46 and 74,705.82

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Solution

The fourth proportional to 130,986.90, 196,340.46 and 74,705.82 is: 111,978.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,986.90 : 196,340.46 = 74,705.82 : x
  2. Step 2: Convert to fraction form
    130,986.90/196,340.46 = 74,705.82/x
  3. Step 3: Cross multiply
    130,986.90x = 196,340.46 × 74,705.82
  4. Step 4: Simplify right side
    130,986.90x = 14,667,775,063.48
  5. Step 5: Solve for x
    x = 14,667,775,063.48/130,986.90
  6. Step 6: Final answer
    x = 111,978.95

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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.