Home / 207,901,809.30-311,852,713.95-105,865,137.30

Finding the Fourth Proportional to 207,901,809.30, 311,852,713.95 and 105,865,137.30

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Solution

The fourth proportional to 207,901,809.30, 311,852,713.95 and 105,865,137.30 is: 158,797,705.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,901,809.30 : 311,852,713.95 = 105,865,137.30 : x
  2. Step 2: Convert to fraction form
    207,901,809.30/311,852,713.95 = 105,865,137.30/x
  3. Step 3: Cross multiply
    207,901,809.30x = 311,852,713.95 × 105,865,137.30
  4. Step 4: Simplify right side
    207,901,809.30x = 33,014,330,379,694,372
  5. Step 5: Solve for x
    x = 33,014,330,379,694,372/207,901,809.30
  6. Step 6: Final answer
    x = 158,797,705.95

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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.