Finding the Fourth Proportional to 149,646.70, 206,509.44 and 81,665.02
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Solution
The fourth proportional to 149,646.70, 206,509.44 and 81,665.02 is: 112,696.09
Step by Step Solution
- Step 1: Write the proportion equation
149,646.70 : 206,509.44 = 81,665.02 : x - Step 2: Convert to fraction form
149,646.70/206,509.44 = 81,665.02/x - Step 3: Cross multiply
149,646.70x = 206,509.44 × 81,665.02 - Step 4: Simplify right side
149,646.70x = 16,864,597,547.79 - Step 5: Solve for x
x = 16,864,597,547.79/149,646.70 - Step 6: Final answer
x = 112,696.09
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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.