Home / 151,243.20-208,692.25-87,568.70

Finding the Fourth Proportional to 151,243.20, 208,692.25 and 87,568.70

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Solution

The fourth proportional to 151,243.20, 208,692.25 and 87,568.70 is: 120,831.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,243.20 : 208,692.25 = 87,568.70 : x
  2. Step 2: Convert to fraction form
    151,243.20/208,692.25 = 87,568.70/x
  3. Step 3: Cross multiply
    151,243.20x = 208,692.25 × 87,568.70
  4. Step 4: Simplify right side
    151,243.20x = 18,274,907,770.19
  5. Step 5: Solve for x
    x = 18,274,907,770.19/151,243.20
  6. Step 6: Final answer
    x = 120,831.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.