Home / 138,382,611.40-190,936,321.14-82,617,178.12

Finding the Fourth Proportional to 138,382,611.40, 190,936,321.14 and 82,617,178.12

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Solution

The fourth proportional to 138,382,611.40, 190,936,321.14 and 82,617,178.12 is: 113,992,790.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,382,611.40 : 190,936,321.14 = 82,617,178.12 : x
  2. Step 2: Convert to fraction form
    138,382,611.40/190,936,321.14 = 82,617,178.12/x
  3. Step 3: Cross multiply
    138,382,611.40x = 190,936,321.14 × 82,617,178.12
  4. Step 4: Simplify right side
    138,382,611.40x = 15,774,620,053,200,902
  5. Step 5: Solve for x
    x = 15,774,620,053,200,902/138,382,611.40
  6. Step 6: Final answer
    x = 113,992,790.67

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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.