Finding the Fourth Proportional to 102,431.16, 141,304.76 and 68,447.99
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Solution
The fourth proportional to 102,431.16, 141,304.76 and 68,447.99 is: 94,424.65
Step by Step Solution
- Step 1: Write the proportion equation
102,431.16 : 141,304.76 = 68,447.99 : x - Step 2: Convert to fraction form
102,431.16/141,304.76 = 68,447.99/x - Step 3: Cross multiply
102,431.16x = 141,304.76 × 68,447.99 - Step 4: Simplify right side
102,431.16x = 9,672,026,799.43 - Step 5: Solve for x
x = 9,672,026,799.43/102,431.16 - Step 6: Final answer
x = 94,424.65
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1.5x scale
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.