Home / 100,816.29-151,246.31-30,693.78

Finding the Fourth Proportional to 100,816.29, 151,246.31 and 30,693.78

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Solution

The fourth proportional to 100,816.29, 151,246.31 and 30,693.78 is: 46,047.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,816.29 : 151,246.31 = 30,693.78 : x
  2. Step 2: Convert to fraction form
    100,816.29/151,246.31 = 30,693.78/x
  3. Step 3: Cross multiply
    100,816.29x = 151,246.31 × 30,693.78
  4. Step 4: Simplify right side
    100,816.29x = 4,642,320,811.48
  5. Step 5: Solve for x
    x = 4,642,320,811.48/100,816.29
  6. Step 6: Final answer
    x = 46,047.33

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.