Home / 90,379.04-135,535.08-31,198.64

Finding the Fourth Proportional to 90,379.04, 135,535.08 and 31,198.64

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Solution

The fourth proportional to 90,379.04, 135,535.08 and 31,198.64 is: 46,786.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,379.04 : 135,535.08 = 31,198.64 : x
  2. Step 2: Convert to fraction form
    90,379.04/135,535.08 = 31,198.64/x
  3. Step 3: Cross multiply
    90,379.04x = 135,535.08 × 31,198.64
  4. Step 4: Simplify right side
    90,379.04x = 4,228,510,168.29
  5. Step 5: Solve for x
    x = 4,228,510,168.29/90,379.04
  6. Step 6: Final answer
    x = 46,786.40

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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.