Home / 154,768.65-231,853.27-90,571.49

Finding the Fourth Proportional to 154,768.65, 231,853.27 and 90,571.49

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Solution

The fourth proportional to 154,768.65, 231,853.27 and 90,571.49 is: 135,681.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,768.65 : 231,853.27 = 90,571.49 : x
  2. Step 2: Convert to fraction form
    154,768.65/231,853.27 = 90,571.49/x
  3. Step 3: Cross multiply
    154,768.65x = 231,853.27 × 90,571.49
  4. Step 4: Simplify right side
    154,768.65x = 20,999,296,125.27
  5. Step 5: Solve for x
    x = 20,999,296,125.27/154,768.65
  6. Step 6: Final answer
    x = 135,681.85

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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.