Home / 212,715.40-319,073.10-106,427.20

Finding the Fourth Proportional to 212,715.40, 319,073.10 and 106,427.20

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Solution

The fourth proportional to 212,715.40, 319,073.10 and 106,427.20 is: 159,640.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,715.40 : 319,073.10 = 106,427.20 : x
  2. Step 2: Convert to fraction form
    212,715.40/319,073.10 = 106,427.20/x
  3. Step 3: Cross multiply
    212,715.40x = 319,073.10 × 106,427.20
  4. Step 4: Simplify right side
    212,715.40x = 33,958,056,628.32
  5. Step 5: Solve for x
    x = 33,958,056,628.32/212,715.40
  6. Step 6: Final answer
    x = 159,640.80

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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.