Home / 207,901,812.80-311,852,719.20-105,865,140.80

Finding the Fourth Proportional to 207,901,812.80, 311,852,719.20 and 105,865,140.80

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Solution

The fourth proportional to 207,901,812.80, 311,852,719.20 and 105,865,140.80 is: 158,797,711.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,901,812.80 : 311,852,719.20 = 105,865,140.80 : x
  2. Step 2: Convert to fraction form
    207,901,812.80/311,852,719.20 = 105,865,140.80/x
  3. Step 3: Cross multiply
    207,901,812.80x = 311,852,719.20 × 105,865,140.80
  4. Step 4: Simplify right side
    207,901,812.80x = 33,014,332,026,970,860
  5. Step 5: Solve for x
    x = 33,014,332,026,970,860/207,901,812.80
  6. Step 6: Final answer
    x = 158,797,711.20

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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.