Finding the Fourth Proportional to 157,666.82, 217,817.37 and 103,347.99
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Solution
The fourth proportional to 157,666.82, 217,817.37 and 103,347.99 is: 142,775.68
Step by Step Solution
- Step 1: Write the proportion equation
157,666.82 : 217,817.37 = 103,347.99 : x - Step 2: Convert to fraction form
157,666.82/217,817.37 = 103,347.99/x - Step 3: Cross multiply
157,666.82x = 217,817.37 × 103,347.99 - Step 4: Simplify right side
157,666.82x = 22,510,987,376.59 - Step 5: Solve for x
x = 22,510,987,376.59/157,666.82 - Step 6: Final answer
x = 142,775.68
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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.