Finding the Fourth Proportional to 135,237.30, 202,979.95 and 68,723.70
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Solution
The fourth proportional to 135,237.30, 202,979.95 and 68,723.70 is: 103,148.56
Step by Step Solution
- Step 1: Write the proportion equation
135,237.30 : 202,979.95 = 68,723.70 : x - Step 2: Convert to fraction form
135,237.30/202,979.95 = 68,723.70/x - Step 3: Cross multiply
135,237.30x = 202,979.95 × 68,723.70 - Step 4: Simplify right side
135,237.30x = 13,949,533,189.82 - Step 5: Solve for x
x = 13,949,533,189.82/135,237.30 - Step 6: Final answer
x = 103,148.56
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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.