Home / 100,806.32-151,231.35-30,683.81

Finding the Fourth Proportional to 100,806.32, 151,231.35 and 30,683.81

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Solution

The fourth proportional to 100,806.32, 151,231.35 and 30,683.81 is: 46,032.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,806.32 : 151,231.35 = 30,683.81 : x
  2. Step 2: Convert to fraction form
    100,806.32/151,231.35 = 30,683.81/x
  3. Step 3: Cross multiply
    100,806.32x = 151,231.35 × 30,683.81
  4. Step 4: Simplify right side
    100,806.32x = 4,640,354,502.59
  5. Step 5: Solve for x
    x = 4,640,354,502.59/100,806.32
  6. Step 6: Final answer
    x = 46,032.38

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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.