Finding the Fourth Proportional to 135,389.08, 186,889.28 and 121,217.32
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Solution
The fourth proportional to 135,389.08, 186,889.28 and 121,217.32 is: 167,326.77
Step by Step Solution
- Step 1: Write the proportion equation
135,389.08 : 186,889.28 = 121,217.32 : x - Step 2: Convert to fraction form
135,389.08/186,889.28 = 121,217.32/x - Step 3: Cross multiply
135,389.08x = 186,889.28 × 121,217.32 - Step 4: Simplify right side
135,389.08x = 22,654,217,658.33 - Step 5: Solve for x
x = 22,654,217,658.33/135,389.08 - Step 6: Final answer
x = 167,326.77
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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.