Home / 212,639.24-319,156.50-107,533.64

Finding the Fourth Proportional to 212,639.24, 319,156.50 and 107,533.64

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Solution

The fourth proportional to 212,639.24, 319,156.50 and 107,533.64 is: 161,400.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,639.24 : 319,156.50 = 107,533.64 : x
  2. Step 2: Convert to fraction form
    212,639.24/319,156.50 = 107,533.64/x
  3. Step 3: Cross multiply
    212,639.24x = 319,156.50 × 107,533.64
  4. Step 4: Simplify right side
    212,639.24x = 34,320,060,174.66
  5. Step 5: Solve for x
    x = 34,320,060,174.66/212,639.24
  6. Step 6: Final answer
    x = 161,400.41

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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.