Home / 90,192.12-135,249.72-31,033.80

Finding the Fourth Proportional to 90,192.12, 135,249.72 and 31,033.80

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Solution

The fourth proportional to 90,192.12, 135,249.72 and 31,033.80 is: 46,537.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,192.12 : 135,249.72 = 31,033.80 : x
  2. Step 2: Convert to fraction form
    90,192.12/135,249.72 = 31,033.80/x
  3. Step 3: Cross multiply
    90,192.12x = 135,249.72 × 31,033.80
  4. Step 4: Simplify right side
    90,192.12x = 4,197,312,760.54
  5. Step 5: Solve for x
    x = 4,197,312,760.54/90,192.12
  6. Step 6: Final answer
    x = 46,537.47

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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.