Home / 212,189.64-318,087.58-71,850.12

Finding the Fourth Proportional to 212,189.64, 318,087.58 and 71,850.12

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Solution

The fourth proportional to 212,189.64, 318,087.58 and 71,850.12 is: 107,708.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,189.64 : 318,087.58 = 71,850.12 : x
  2. Step 2: Convert to fraction form
    212,189.64/318,087.58 = 71,850.12/x
  3. Step 3: Cross multiply
    212,189.64x = 318,087.58 × 71,850.12
  4. Step 4: Simplify right side
    212,189.64x = 22,854,630,793.51
  5. Step 5: Solve for x
    x = 22,854,630,793.51/212,189.64
  6. Step 6: Final answer
    x = 107,708.51

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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.