Home / 207,901,831.80-311,852,747.70-105,865,159.80

Finding the Fourth Proportional to 207,901,831.80, 311,852,747.70 and 105,865,159.80

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Solution

The fourth proportional to 207,901,831.80, 311,852,747.70 and 105,865,159.80 is: 158,797,739.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,901,831.80 : 311,852,747.70 = 105,865,159.80 : x
  2. Step 2: Convert to fraction form
    207,901,831.80/311,852,747.70 = 105,865,159.80/x
  3. Step 3: Cross multiply
    207,901,831.80x = 311,852,747.70 × 105,865,159.80
  4. Step 4: Simplify right side
    207,901,831.80x = 33,014,340,969,329,580
  5. Step 5: Solve for x
    x = 33,014,340,969,329,580/207,901,831.80
  6. Step 6: Final answer
    x = 158,797,739.70

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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.