Home / 111,971.14-154,470.24-75,660.88

Finding the Fourth Proportional to 111,971.14, 154,470.24 and 75,660.88

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Solution

The fourth proportional to 111,971.14, 154,470.24 and 75,660.88 is: 104,378.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,971.14 : 154,470.24 = 75,660.88 : x
  2. Step 2: Convert to fraction form
    111,971.14/154,470.24 = 75,660.88/x
  3. Step 3: Cross multiply
    111,971.14x = 154,470.24 × 75,660.88
  4. Step 4: Simplify right side
    111,971.14x = 11,687,354,292.21
  5. Step 5: Solve for x
    x = 11,687,354,292.21/111,971.14
  6. Step 6: Final answer
    x = 104,378.27

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1.5x scale

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.