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Finding the Fourth Proportional to 100,770.09, 150,831.93 and 66,958.46

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Solution

The fourth proportional to 100,770.09, 150,831.93 and 66,958.46 is: 100,222.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,770.09 : 150,831.93 = 66,958.46 : x
  2. Step 2: Convert to fraction form
    100,770.09/150,831.93 = 66,958.46/x
  3. Step 3: Cross multiply
    100,770.09x = 150,831.93 × 66,958.46
  4. Step 4: Simplify right side
    100,770.09x = 10,099,473,751.63
  5. Step 5: Solve for x
    x = 10,099,473,751.63/100,770.09
  6. Step 6: Final answer
    x = 100,222.93

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1.5x scale

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.