Finding the Fourth Proportional to 216,705.21, 299,036.95 and 121,193.45
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Solution
The fourth proportional to 216,705.21, 299,036.95 and 121,193.45 is: 167,237.88
Step by Step Solution
- Step 1: Write the proportion equation
216,705.21 : 299,036.95 = 121,193.45 : x - Step 2: Convert to fraction form
216,705.21/299,036.95 = 121,193.45/x - Step 3: Cross multiply
216,705.21x = 299,036.95 × 121,193.45 - Step 4: Simplify right side
216,705.21x = 36,241,319,647.98 - Step 5: Solve for x
x = 36,241,319,647.98/216,705.21 - Step 6: Final answer
x = 167,237.88
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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.