Home / 111,738.48-154,231.80-66,448.38

Finding the Fourth Proportional to 111,738.48, 154,231.80 and 66,448.38

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Solution

The fourth proportional to 111,738.48, 154,231.80 and 66,448.38 is: 91,718.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,738.48 : 154,231.80 = 66,448.38 : x
  2. Step 2: Convert to fraction form
    111,738.48/154,231.80 = 66,448.38/x
  3. Step 3: Cross multiply
    111,738.48x = 154,231.80 × 66,448.38
  4. Step 4: Simplify right side
    111,738.48x = 10,248,453,254.48
  5. Step 5: Solve for x
    x = 10,248,453,254.48/111,738.48
  6. Step 6: Final answer
    x = 91,718.21

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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.