Finding the Fourth Proportional to 137,177.79, 189,312.69 and 76,744.82
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Solution
The fourth proportional to 137,177.79, 189,312.69 and 76,744.82 is: 105,911.95
Step by Step Solution
- Step 1: Write the proportion equation
137,177.79 : 189,312.69 = 76,744.82 : x - Step 2: Convert to fraction form
137,177.79/189,312.69 = 76,744.82/x - Step 3: Cross multiply
137,177.79x = 189,312.69 × 76,744.82 - Step 4: Simplify right side
137,177.79x = 14,528,767,371.20 - Step 5: Solve for x
x = 14,528,767,371.20/137,177.79 - Step 6: Final answer
x = 105,911.95
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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.