Finding the Fourth Proportional to 135,426.08, 186,837.81 and 87,705.74
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Solution
The fourth proportional to 135,426.08, 186,837.81 and 87,705.74 is: 121,001.42
Step by Step Solution
- Step 1: Write the proportion equation
135,426.08 : 186,837.81 = 87,705.74 : x - Step 2: Convert to fraction form
135,426.08/186,837.81 = 87,705.74/x - Step 3: Cross multiply
135,426.08x = 186,837.81 × 87,705.74 - Step 4: Simplify right side
135,426.08x = 16,386,748,524.23 - Step 5: Solve for x
x = 16,386,748,524.23/135,426.08 - Step 6: Final answer
x = 121,001.42
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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.