Finding the Fourth Proportional to 138,184.40, 207,264.65 and 84,135.06
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Solution
The fourth proportional to 138,184.40, 207,264.65 and 84,135.06 is: 126,195.31
Step by Step Solution
- Step 1: Write the proportion equation
138,184.40 : 207,264.65 = 84,135.06 : x - Step 2: Convert to fraction form
138,184.40/207,264.65 = 84,135.06/x - Step 3: Cross multiply
138,184.40x = 207,264.65 × 84,135.06 - Step 4: Simplify right side
138,184.40x = 17,438,223,342.95 - Step 5: Solve for x
x = 17,438,223,342.95/138,184.40 - Step 6: Final answer
x = 126,195.31
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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.