Finding the Fourth Proportional to 121,998.98, 168,358.55 and 68,283.98
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Solution
The fourth proportional to 121,998.98, 168,358.55 and 68,283.98 is: 94,231.87
Step by Step Solution
- Step 1: Write the proportion equation
121,998.98 : 168,358.55 = 68,283.98 : x - Step 2: Convert to fraction form
121,998.98/168,358.55 = 68,283.98/x - Step 3: Cross multiply
121,998.98x = 168,358.55 × 68,283.98 - Step 4: Simplify right side
121,998.98x = 11,496,191,693.26 - Step 5: Solve for x
x = 11,496,191,693.26/121,998.98 - Step 6: Final answer
x = 94,231.87
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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.