Finding the Fourth Proportional to 157,389.89, 217,190.36 and 89,398.08
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Solution
The fourth proportional to 157,389.89, 217,190.36 and 89,398.08 is: 123,364.99
Step by Step Solution
- Step 1: Write the proportion equation
157,389.89 : 217,190.36 = 89,398.08 : x - Step 2: Convert to fraction form
157,389.89/217,190.36 = 89,398.08/x - Step 3: Cross multiply
157,389.89x = 217,190.36 × 89,398.08 - Step 4: Simplify right side
157,389.89x = 19,416,401,402.00 - Step 5: Solve for x
x = 19,416,401,402.00/157,389.89 - Step 6: Final answer
x = 123,364.99
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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.