Finding the Fourth Proportional to 142,683.15, 214,352.91 and 100,660.08
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Solution
The fourth proportional to 142,683.15, 214,352.91 and 100,660.08 is: 151,221.65
Step by Step Solution
- Step 1: Write the proportion equation
142,683.15 : 214,352.91 = 100,660.08 : x - Step 2: Convert to fraction form
142,683.15/214,352.91 = 100,660.08/x - Step 3: Cross multiply
142,683.15x = 214,352.91 × 100,660.08 - Step 4: Simplify right side
142,683.15x = 21,576,781,068.83 - Step 5: Solve for x
x = 21,576,781,068.83/142,683.15 - Step 6: Final answer
x = 151,221.65
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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.