Home / 212,334.23-318,612.06-86,067.79

Finding the Fourth Proportional to 212,334.23, 318,612.06 and 86,067.79

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Solution

The fourth proportional to 212,334.23, 318,612.06 and 86,067.79 is: 129,146.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,334.23 : 318,612.06 = 86,067.79 : x
  2. Step 2: Convert to fraction form
    212,334.23/318,612.06 = 86,067.79/x
  3. Step 3: Cross multiply
    212,334.23x = 318,612.06 × 86,067.79
  4. Step 4: Simplify right side
    212,334.23x = 27,422,235,075.02
  5. Step 5: Solve for x
    x = 27,422,235,075.02/212,334.23
  6. Step 6: Final answer
    x = 129,146.56

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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.