Home / 212,986.56-319,363.68-106,136.40

Finding the Fourth Proportional to 212,986.56, 319,363.68 and 106,136.40

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Solution

The fourth proportional to 212,986.56, 319,363.68 and 106,136.40 is: 159,146.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,986.56 : 319,363.68 = 106,136.40 : x
  2. Step 2: Convert to fraction form
    212,986.56/319,363.68 = 106,136.40/x
  3. Step 3: Cross multiply
    212,986.56x = 319,363.68 × 106,136.40
  4. Step 4: Simplify right side
    212,986.56x = 33,896,111,285.95
  5. Step 5: Solve for x
    x = 33,896,111,285.95/212,986.56
  6. Step 6: Final answer
    x = 159,146.71

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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.