Finding the Fourth Proportional to 138,602.70, 207,612.45 and 115,274.70
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Solution
The fourth proportional to 138,602.70, 207,612.45 and 115,274.70 is: 172,669.53
Step by Step Solution
- Step 1: Write the proportion equation
138,602.70 : 207,612.45 = 115,274.70 : x - Step 2: Convert to fraction form
138,602.70/207,612.45 = 115,274.70/x - Step 3: Cross multiply
138,602.70x = 207,612.45 × 115,274.70 - Step 4: Simplify right side
138,602.70x = 23,932,462,890.02 - Step 5: Solve for x
x = 23,932,462,890.02/138,602.70 - Step 6: Final answer
x = 172,669.53
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.