Finding the Fourth Proportional to 137,392.72, 205,794.90 and 103,742.08
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Solution
The fourth proportional to 137,392.72, 205,794.90 and 103,742.08 is: 155,390.99
Step by Step Solution
- Step 1: Write the proportion equation
137,392.72 : 205,794.90 = 103,742.08 : x - Step 2: Convert to fraction form
137,392.72/205,794.90 = 103,742.08/x - Step 3: Cross multiply
137,392.72x = 205,794.90 × 103,742.08 - Step 4: Simplify right side
137,392.72x = 21,349,590,979.39 - Step 5: Solve for x
x = 21,349,590,979.39/137,392.72 - Step 6: Final answer
x = 155,390.99
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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.