Home / 202,011.21-278,777.43-111,370.80

Finding the Fourth Proportional to 202,011.21, 278,777.43 and 111,370.80

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Solution

The fourth proportional to 202,011.21, 278,777.43 and 111,370.80 is: 153,692.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,011.21 : 278,777.43 = 111,370.80 : x
  2. Step 2: Convert to fraction form
    202,011.21/278,777.43 = 111,370.80/x
  3. Step 3: Cross multiply
    202,011.21x = 278,777.43 × 111,370.80
  4. Step 4: Simplify right side
    202,011.21x = 31,047,665,401.04
  5. Step 5: Solve for x
    x = 31,047,665,401.04/202,011.21
  6. Step 6: Final answer
    x = 153,692.78

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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.