Home / 318,120.16-477,144.18-81,464.56

Finding the Fourth Proportional to 318,120.16, 477,144.18 and 81,464.56

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Solution

The fourth proportional to 318,120.16, 477,144.18 and 81,464.56 is: 122,187.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,120.16 : 477,144.18 = 81,464.56 : x
  2. Step 2: Convert to fraction form
    318,120.16/477,144.18 = 81,464.56/x
  3. Step 3: Cross multiply
    318,120.16x = 477,144.18 × 81,464.56
  4. Step 4: Simplify right side
    318,120.16x = 38,870,340,680.26
  5. Step 5: Solve for x
    x = 38,870,340,680.26/318,120.16
  6. Step 6: Final answer
    x = 122,187.61

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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.