Home / 131,115-196,818.39-67,918.26

Finding the Fourth Proportional to 131,115, 196,818.39 and 67,918.26

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Solution

The fourth proportional to 131,115, 196,818.39 and 67,918.26 is: 101,952.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,115 : 196,818.39 = 67,918.26 : x
  2. Step 2: Convert to fraction form
    131,115/196,818.39 = 67,918.26/x
  3. Step 3: Cross multiply
    131,115x = 196,818.39 × 67,918.26
  4. Step 4: Simplify right side
    131,115x = 13,367,562,584.80
  5. Step 5: Solve for x
    x = 13,367,562,584.80/131,115
  6. Step 6: Final answer
    x = 101,952.96

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1.5x scale

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.