Finding the Fourth Proportional to 137,455.68, 189,700.47 and 77,025.63
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Solution
The fourth proportional to 137,455.68, 189,700.47 and 77,025.63 is: 106,301.89
Step by Step Solution
- Step 1: Write the proportion equation
137,455.68 : 189,700.47 = 77,025.63 : x - Step 2: Convert to fraction form
137,455.68/189,700.47 = 77,025.63/x - Step 3: Cross multiply
137,455.68x = 189,700.47 × 77,025.63 - Step 4: Simplify right side
137,455.68x = 14,611,798,213.05 - Step 5: Solve for x
x = 14,611,798,213.05/137,455.68 - Step 6: Final answer
x = 106,301.89
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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.