Finding the Fourth Proportional to 102,908.06, 141,876.99 and 74,203.70
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Solution
The fourth proportional to 102,908.06, 141,876.99 and 74,203.70 is: 102,302.95
Step by Step Solution
- Step 1: Write the proportion equation
102,908.06 : 141,876.99 = 74,203.70 : x - Step 2: Convert to fraction form
102,908.06/141,876.99 = 74,203.70/x - Step 3: Cross multiply
102,908.06x = 141,876.99 × 74,203.70 - Step 4: Simplify right side
102,908.06x = 10,527,797,602.86 - Step 5: Solve for x
x = 10,527,797,602.86/102,908.06 - Step 6: Final answer
x = 102,302.95
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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.