Finding the Fourth Proportional to 137,289.09, 189,445.73 and 76,854.99
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Solution
The fourth proportional to 137,289.09, 189,445.73 and 76,854.99 is: 106,052.49
Step by Step Solution
- Step 1: Write the proportion equation
137,289.09 : 189,445.73 = 76,854.99 : x - Step 2: Convert to fraction form
137,289.09/189,445.73 = 76,854.99/x - Step 3: Cross multiply
137,289.09x = 189,445.73 × 76,854.99 - Step 4: Simplify right side
137,289.09x = 14,559,849,300.42 - Step 5: Solve for x
x = 14,559,849,300.42/137,289.09 - Step 6: Final answer
x = 106,052.49
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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.