Home / 207,901,815.80-311,852,723.70-105,865,143.80

Finding the Fourth Proportional to 207,901,815.80, 311,852,723.70 and 105,865,143.80

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Solution

The fourth proportional to 207,901,815.80, 311,852,723.70 and 105,865,143.80 is: 158,797,715.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,901,815.80 : 311,852,723.70 = 105,865,143.80 : x
  2. Step 2: Convert to fraction form
    207,901,815.80/311,852,723.70 = 105,865,143.80/x
  3. Step 3: Cross multiply
    207,901,815.80x = 311,852,723.70 × 105,865,143.80
  4. Step 4: Simplify right side
    207,901,815.80x = 33,014,333,438,922,164
  5. Step 5: Solve for x
    x = 33,014,333,438,922,164/207,901,815.80
  6. Step 6: Final answer
    x = 158,797,715.70

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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.