Finding the Fourth Proportional to 135,237.80, 202,914.30 and 85,356.20
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Solution
The fourth proportional to 135,237.80, 202,914.30 and 85,356.20 is: 128,070.65
Step by Step Solution
- Step 1: Write the proportion equation
135,237.80 : 202,914.30 = 85,356.20 : x - Step 2: Convert to fraction form
135,237.80/202,914.30 = 85,356.20/x - Step 3: Cross multiply
135,237.80x = 202,914.30 × 85,356.20 - Step 4: Simplify right side
135,237.80x = 17,319,993,573.66 - Step 5: Solve for x
x = 17,319,993,573.66/135,237.80 - Step 6: Final answer
x = 128,070.65
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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.