Home / 212,709.55-319,064.33-118,231.15

Finding the Fourth Proportional to 212,709.55, 319,064.33 and 118,231.15

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Solution

The fourth proportional to 212,709.55, 319,064.33 and 118,231.15 is: 177,346.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,709.55 : 319,064.33 = 118,231.15 : x
  2. Step 2: Convert to fraction form
    212,709.55/319,064.33 = 118,231.15/x
  3. Step 3: Cross multiply
    212,709.55x = 319,064.33 × 118,231.15
  4. Step 4: Simplify right side
    212,709.55x = 37,723,342,068.72
  5. Step 5: Solve for x
    x = 37,723,342,068.72/212,709.55
  6. Step 6: Final answer
    x = 177,346.73

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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.