Home / 111,943.16-154,584.18-71,120.48

Finding the Fourth Proportional to 111,943.16, 154,584.18 and 71,120.48

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Solution

The fourth proportional to 111,943.16, 154,584.18 and 71,120.48 is: 98,211.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,943.16 : 154,584.18 = 71,120.48 : x
  2. Step 2: Convert to fraction form
    111,943.16/154,584.18 = 71,120.48/x
  3. Step 3: Cross multiply
    111,943.16x = 154,584.18 × 71,120.48
  4. Step 4: Simplify right side
    111,943.16x = 10,994,100,309.09
  5. Step 5: Solve for x
    x = 10,994,100,309.09/111,943.16
  6. Step 6: Final answer
    x = 98,211.45

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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.