Home / 142,579.49-196,737.66-82,138.31

Finding the Fourth Proportional to 142,579.49, 196,737.66 and 82,138.31

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Solution

The fourth proportional to 142,579.49, 196,737.66 and 82,138.31 is: 113,338.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,579.49 : 196,737.66 = 82,138.31 : x
  2. Step 2: Convert to fraction form
    142,579.49/196,737.66 = 82,138.31/x
  3. Step 3: Cross multiply
    142,579.49x = 196,737.66 × 82,138.31
  4. Step 4: Simplify right side
    142,579.49x = 16,159,697,922.07
  5. Step 5: Solve for x
    x = 16,159,697,922.07/142,579.49
  6. Step 6: Final answer
    x = 113,338.17

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.