Finding the Fourth Proportional to 115,985.10, 162,845.70 and 115,985.10
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Solution
The fourth proportional to 115,985.10, 162,845.70 and 115,985.10 is: 162,845.70
Step by Step Solution
- Step 1: Write the proportion equation
115,985.10 : 162,845.70 = 115,985.10 : x - Step 2: Convert to fraction form
115,985.10/162,845.70 = 115,985.10/x - Step 3: Cross multiply
115,985.10x = 162,845.70 × 115,985.10 - Step 4: Simplify right side
115,985.10x = 18,887,674,799.07 - Step 5: Solve for x
x = 18,887,674,799.07/115,985.10 - Step 6: Final answer
x = 162,845.70
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Why These Related Problems?
These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.