Finding the Fourth Proportional to 158,658.51, 218,941.49 and 87,036.99
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Solution
The fourth proportional to 158,658.51, 218,941.49 and 87,036.99 is: 120,107.07
Step by Step Solution
- Step 1: Write the proportion equation
158,658.51 : 218,941.49 = 87,036.99 : x - Step 2: Convert to fraction form
158,658.51/218,941.49 = 87,036.99/x - Step 3: Cross multiply
158,658.51x = 218,941.49 × 87,036.99 - Step 4: Simplify right side
158,658.51x = 19,056,008,275.72 - Step 5: Solve for x
x = 19,056,008,275.72/158,658.51 - Step 6: Final answer
x = 120,107.07
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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.