Home / 111,979.89-154,505.75-63,571.32

Finding the Fourth Proportional to 111,979.89, 154,505.75 and 63,571.32

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Solution

The fourth proportional to 111,979.89, 154,505.75 and 63,571.32 is: 87,713.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,979.89 : 154,505.75 = 63,571.32 : x
  2. Step 2: Convert to fraction form
    111,979.89/154,505.75 = 63,571.32/x
  3. Step 3: Cross multiply
    111,979.89x = 154,505.75 × 63,571.32
  4. Step 4: Simplify right side
    111,979.89x = 9,822,134,157.23
  5. Step 5: Solve for x
    x = 9,822,134,157.23/111,979.89
  6. Step 6: Final answer
    x = 87,713.38

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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.