Home / 212,816.45-319,155.22-70,623.53

Finding the Fourth Proportional to 212,816.45, 319,155.22 and 70,623.53

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Solution

The fourth proportional to 212,816.45, 319,155.22 and 70,623.53 is: 105,912.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,816.45 : 319,155.22 = 70,623.53 : x
  2. Step 2: Convert to fraction form
    212,816.45/319,155.22 = 70,623.53/x
  3. Step 3: Cross multiply
    212,816.45x = 319,155.22 × 70,623.53
  4. Step 4: Simplify right side
    212,816.45x = 22,539,867,901.21
  5. Step 5: Solve for x
    x = 22,539,867,901.21/212,816.45
  6. Step 6: Final answer
    x = 105,912.24

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.