Finding the Fourth Proportional to 157,973.10, 217,998.99 and 86,353.44
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Solution
The fourth proportional to 157,973.10, 217,998.99 and 86,353.44 is: 119,165.62
Step by Step Solution
- Step 1: Write the proportion equation
157,973.10 : 217,998.99 = 86,353.44 : x - Step 2: Convert to fraction form
157,973.10/217,998.99 = 86,353.44/x - Step 3: Cross multiply
157,973.10x = 217,998.99 × 86,353.44 - Step 4: Simplify right side
157,973.10x = 18,824,962,703.03 - Step 5: Solve for x
x = 18,824,962,703.03/157,973.10 - Step 6: Final answer
x = 119,165.62
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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.