Finding the Fourth Proportional to 137,254.68, 189,402.71 and 76,815.14
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Solution
The fourth proportional to 137,254.68, 189,402.71 and 76,815.14 is: 105,999.99
Step by Step Solution
- Step 1: Write the proportion equation
137,254.68 : 189,402.71 = 76,815.14 : x - Step 2: Convert to fraction form
137,254.68/189,402.71 = 76,815.14/x - Step 3: Cross multiply
137,254.68x = 189,402.71 × 76,815.14 - Step 4: Simplify right side
137,254.68x = 14,548,994,353.94 - Step 5: Solve for x
x = 14,548,994,353.94/137,254.68 - Step 6: Final answer
x = 105,999.99
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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.