Finding the Fourth Proportional to 235,994.99, 353,779.92 and 86,130.12
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Solution
The fourth proportional to 235,994.99, 353,779.92 and 86,130.12 is: 129,117.60
Step by Step Solution
- Step 1: Write the proportion equation
235,994.99 : 353,779.92 = 86,130.12 : x - Step 2: Convert to fraction form
235,994.99/353,779.92 = 86,130.12/x - Step 3: Cross multiply
235,994.99x = 353,779.92 × 86,130.12 - Step 4: Simplify right side
235,994.99x = 30,471,106,963.19 - Step 5: Solve for x
x = 30,471,106,963.19/235,994.99 - Step 6: Final answer
x = 129,117.60
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.