Finding the Fourth Proportional to 137,543.12, 189,635.07 and 98,298.99
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Solution
The fourth proportional to 137,543.12, 189,635.07 and 98,298.99 is: 135,527.95
Step by Step Solution
- Step 1: Write the proportion equation
137,543.12 : 189,635.07 = 98,298.99 : x - Step 2: Convert to fraction form
137,543.12/189,635.07 = 98,298.99/x - Step 3: Cross multiply
137,543.12x = 189,635.07 × 98,298.99 - Step 4: Simplify right side
137,543.12x = 18,640,935,849.58 - Step 5: Solve for x
x = 18,640,935,849.58/137,543.12 - Step 6: Final answer
x = 135,527.95
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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.