Home / 212,709.05-319,062.43-122,693.42

Finding the Fourth Proportional to 212,709.05, 319,062.43 and 122,693.42

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Solution

The fourth proportional to 212,709.05, 319,062.43 and 122,693.42 is: 184,039.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,709.05 : 319,062.43 = 122,693.42 : x
  2. Step 2: Convert to fraction form
    212,709.05/319,062.43 = 122,693.42/x
  3. Step 3: Cross multiply
    212,709.05x = 319,062.43 × 122,693.42
  4. Step 4: Simplify right side
    212,709.05x = 39,146,861,527.87
  5. Step 5: Solve for x
    x = 39,146,861,527.87/212,709.05
  6. Step 6: Final answer
    x = 184,039.47

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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.