Finding the Fourth Proportional to 137,301.22, 189,465.46 and 79,940.99
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Solution
The fourth proportional to 137,301.22, 189,465.46 and 79,940.99 is: 110,312.61
Step by Step Solution
- Step 1: Write the proportion equation
137,301.22 : 189,465.46 = 79,940.99 : x - Step 2: Convert to fraction form
137,301.22/189,465.46 = 79,940.99/x - Step 3: Cross multiply
137,301.22x = 189,465.46 × 79,940.99 - Step 4: Simplify right side
137,301.22x = 15,146,056,100.94 - Step 5: Solve for x
x = 15,146,056,100.94/137,301.22 - Step 6: Final answer
x = 110,312.61
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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.