Home / 170,717.20-256,075.80-81,949.30

Finding the Fourth Proportional to 170,717.20, 256,075.80 and 81,949.30

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Solution

The fourth proportional to 170,717.20, 256,075.80 and 81,949.30 is: 122,923.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,717.20 : 256,075.80 = 81,949.30 : x
  2. Step 2: Convert to fraction form
    170,717.20/256,075.80 = 81,949.30/x
  3. Step 3: Cross multiply
    170,717.20x = 256,075.80 × 81,949.30
  4. Step 4: Simplify right side
    170,717.20x = 20,985,232,556.94
  5. Step 5: Solve for x
    x = 20,985,232,556.94/170,717.20
  6. Step 6: Final answer
    x = 122,923.95

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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.