Finding the Fourth Proportional to 136,371.79, 188,312.05 and 85,472.02
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Solution
The fourth proportional to 136,371.79, 188,312.05 and 85,472.02 is: 118,025.96
Step by Step Solution
- Step 1: Write the proportion equation
136,371.79 : 188,312.05 = 85,472.02 : x - Step 2: Convert to fraction form
136,371.79/188,312.05 = 85,472.02/x - Step 3: Cross multiply
136,371.79x = 188,312.05 × 85,472.02 - Step 4: Simplify right side
136,371.79x = 16,095,412,031.08 - Step 5: Solve for x
x = 16,095,412,031.08/136,371.79 - Step 6: Final answer
x = 118,025.96
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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.