Home / 207,901,811.30-311,852,716.95-105,865,139.30

Finding the Fourth Proportional to 207,901,811.30, 311,852,716.95 and 105,865,139.30

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Solution

The fourth proportional to 207,901,811.30, 311,852,716.95 and 105,865,139.30 is: 158,797,708.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,901,811.30 : 311,852,716.95 = 105,865,139.30 : x
  2. Step 2: Convert to fraction form
    207,901,811.30/311,852,716.95 = 105,865,139.30/x
  3. Step 3: Cross multiply
    207,901,811.30x = 311,852,716.95 × 105,865,139.30
  4. Step 4: Simplify right side
    207,901,811.30x = 33,014,331,320,995,220
  5. Step 5: Solve for x
    x = 33,014,331,320,995,220/207,901,811.30
  6. Step 6: Final answer
    x = 158,797,708.95

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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.