Home / 106,213.78-159,265.81-31,324.40

Finding the Fourth Proportional to 106,213.78, 159,265.81 and 31,324.40

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Solution

The fourth proportional to 106,213.78, 159,265.81 and 31,324.40 is: 46,970.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,213.78 : 159,265.81 = 31,324.40 : x
  2. Step 2: Convert to fraction form
    106,213.78/159,265.81 = 31,324.40/x
  3. Step 3: Cross multiply
    106,213.78x = 159,265.81 × 31,324.40
  4. Step 4: Simplify right side
    106,213.78x = 4,988,905,938.76
  5. Step 5: Solve for x
    x = 4,988,905,938.76/106,213.78
  6. Step 6: Final answer
    x = 46,970.42

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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.