Home / 90,188.46-135,238.95-31,003.38

Finding the Fourth Proportional to 90,188.46, 135,238.95 and 31,003.38

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Solution

The fourth proportional to 90,188.46, 135,238.95 and 31,003.38 is: 46,490.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,188.46 : 135,238.95 = 31,003.38 : x
  2. Step 2: Convert to fraction form
    90,188.46/135,238.95 = 31,003.38/x
  3. Step 3: Cross multiply
    90,188.46x = 135,238.95 × 31,003.38
  4. Step 4: Simplify right side
    90,188.46x = 4,192,864,557.65
  5. Step 5: Solve for x
    x = 4,192,864,557.65/90,188.46
  6. Step 6: Final answer
    x = 46,490.03

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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.