Finding the Fourth Proportional to 138,718.98, 208,027.44 and 49,948.65
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Solution
The fourth proportional to 138,718.98, 208,027.44 and 49,948.65 is: 74,904.60
Step by Step Solution
- Step 1: Write the proportion equation
138,718.98 : 208,027.44 = 49,948.65 : x - Step 2: Convert to fraction form
138,718.98/208,027.44 = 49,948.65/x - Step 3: Cross multiply
138,718.98x = 208,027.44 × 49,948.65 - Step 4: Simplify right side
138,718.98x = 10,390,689,790.96 - Step 5: Solve for x
x = 10,390,689,790.96/138,718.98 - Step 6: Final answer
x = 74,904.60
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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.