Home / 117,763.81-162,450.97-81,891.54

Finding the Fourth Proportional to 117,763.81, 162,450.97 and 81,891.54

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Solution

The fourth proportional to 117,763.81, 162,450.97 and 81,891.54 is: 112,966.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,763.81 : 162,450.97 = 81,891.54 : x
  2. Step 2: Convert to fraction form
    117,763.81/162,450.97 = 81,891.54/x
  3. Step 3: Cross multiply
    117,763.81x = 162,450.97 × 81,891.54
  4. Step 4: Simplify right side
    117,763.81x = 13,303,359,903.06
  5. Step 5: Solve for x
    x = 13,303,359,903.06/117,763.81
  6. Step 6: Final answer
    x = 112,966.46

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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.