Home / 159,951.58-240,075-81,121.18

Finding the Fourth Proportional to 159,951.58, 240,075 and 81,121.18

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Solution

The fourth proportional to 159,951.58, 240,075 and 81,121.18 is: 121,756.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,951.58 : 240,075 = 81,121.18 : x
  2. Step 2: Convert to fraction form
    159,951.58/240,075 = 81,121.18/x
  3. Step 3: Cross multiply
    159,951.58x = 240,075 × 81,121.18
  4. Step 4: Simplify right side
    159,951.58x = 19,475,167,288.50
  5. Step 5: Solve for x
    x = 19,475,167,288.50/159,951.58
  6. Step 6: Final answer
    x = 121,756.64

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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.