Home / 212,183.78-318,285.64-70,041.46

Finding the Fourth Proportional to 212,183.78, 318,285.64 and 70,041.46

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Solution

The fourth proportional to 212,183.78, 318,285.64 and 70,041.46 is: 105,065.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,183.78 : 318,285.64 = 70,041.46 : x
  2. Step 2: Convert to fraction form
    212,183.78/318,285.64 = 70,041.46/x
  3. Step 3: Cross multiply
    212,183.78x = 318,285.64 × 70,041.46
  4. Step 4: Simplify right side
    212,183.78x = 22,293,190,922.63
  5. Step 5: Solve for x
    x = 22,293,190,922.63/212,183.78
  6. Step 6: Final answer
    x = 105,065.48

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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.