Home / 154,395.72-213,067.26-87,327.72

Finding the Fourth Proportional to 154,395.72, 213,067.26 and 87,327.72

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Solution

The fourth proportional to 154,395.72, 213,067.26 and 87,327.72 is: 120,512.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,395.72 : 213,067.26 = 87,327.72 : x
  2. Step 2: Convert to fraction form
    154,395.72/213,067.26 = 87,327.72/x
  3. Step 3: Cross multiply
    154,395.72x = 213,067.26 × 87,327.72
  4. Step 4: Simplify right side
    154,395.72x = 18,606,678,022.45
  5. Step 5: Solve for x
    x = 18,606,678,022.45/154,395.72
  6. Step 6: Final answer
    x = 120,512.91

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1.5x scale

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.