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Finding the Fourth Proportional to 111,750.69, 154,260.62 and 68,747.61

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Solution

The fourth proportional to 111,750.69, 154,260.62 and 68,747.61 is: 94,899.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,750.69 : 154,260.62 = 68,747.61 : x
  2. Step 2: Convert to fraction form
    111,750.69/154,260.62 = 68,747.61/x
  3. Step 3: Cross multiply
    111,750.69x = 154,260.62 × 68,747.61
  4. Step 4: Simplify right side
    111,750.69x = 10,605,048,953.65
  5. Step 5: Solve for x
    x = 10,605,048,953.65/111,750.69
  6. Step 6: Final answer
    x = 94,899.18

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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.