Finding the Fourth Proportional to 115,703.60, 159,623.84 and 75,402.68
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Solution
The fourth proportional to 115,703.60, 159,623.84 and 75,402.68 is: 104,024.99
Step by Step Solution
- Step 1: Write the proportion equation
115,703.60 : 159,623.84 = 75,402.68 : x - Step 2: Convert to fraction form
115,703.60/159,623.84 = 75,402.68/x - Step 3: Cross multiply
115,703.60x = 159,623.84 × 75,402.68 - Step 4: Simplify right side
115,703.60x = 12,036,065,327.89 - Step 5: Solve for x
x = 12,036,065,327.89/115,703.60 - Step 6: Final answer
x = 104,024.99
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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.