Home / 212,076.72-318,115.08-71,933.76

Finding the Fourth Proportional to 212,076.72, 318,115.08 and 71,933.76

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Solution

The fourth proportional to 212,076.72, 318,115.08 and 71,933.76 is: 107,900.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,076.72 : 318,115.08 = 71,933.76 : x
  2. Step 2: Convert to fraction form
    212,076.72/318,115.08 = 71,933.76/x
  3. Step 3: Cross multiply
    212,076.72x = 318,115.08 × 71,933.76
  4. Step 4: Simplify right side
    212,076.72x = 22,883,213,817.10
  5. Step 5: Solve for x
    x = 22,883,213,817.10/212,076.72
  6. Step 6: Final answer
    x = 107,900.64

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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.