Home / 212,972.64-319,290.33-106,301.70

Finding the Fourth Proportional to 212,972.64, 319,290.33 and 106,301.70

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Solution

The fourth proportional to 212,972.64, 319,290.33 and 106,301.70 is: 159,368.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,972.64 : 319,290.33 = 106,301.70 : x
  2. Step 2: Convert to fraction form
    212,972.64/319,290.33 = 106,301.70/x
  3. Step 3: Cross multiply
    212,972.64x = 319,290.33 × 106,301.70
  4. Step 4: Simplify right side
    212,972.64x = 33,941,104,872.56
  5. Step 5: Solve for x
    x = 33,941,104,872.56/212,972.64
  6. Step 6: Final answer
    x = 159,368.38

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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.