Home / 213,075.05-319,600.08-79,944.21

Finding the Fourth Proportional to 213,075.05, 319,600.08 and 79,944.21

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Solution

The fourth proportional to 213,075.05, 319,600.08 and 79,944.21 is: 119,911.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,075.05 : 319,600.08 = 79,944.21 : x
  2. Step 2: Convert to fraction form
    213,075.05/319,600.08 = 79,944.21/x
  3. Step 3: Cross multiply
    213,075.05x = 319,600.08 × 79,944.21
  4. Step 4: Simplify right side
    213,075.05x = 25,550,175,911.54
  5. Step 5: Solve for x
    x = 25,550,175,911.54/213,075.05
  6. Step 6: Final answer
    x = 119,911.63

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1.5x scale

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.