Finding the Fourth Proportional to 106,837.12, 147,431.08 and 59,091.26
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Solution
The fourth proportional to 106,837.12, 147,431.08 and 59,091.26 is: 81,543.65
Step by Step Solution
- Step 1: Write the proportion equation
106,837.12 : 147,431.08 = 59,091.26 : x - Step 2: Convert to fraction form
106,837.12/147,431.08 = 59,091.26/x - Step 3: Cross multiply
106,837.12x = 147,431.08 × 59,091.26 - Step 4: Simplify right side
106,837.12x = 8,711,888,280.36 - Step 5: Solve for x
x = 8,711,888,280.36/106,837.12 - Step 6: Final answer
x = 81,543.65
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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.