Finding the Fourth Proportional to 135,397.51, 186,678.97 and 86,913.90
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Solution
The fourth proportional to 135,397.51, 186,678.97 and 86,913.90 is: 119,832.32
Step by Step Solution
- Step 1: Write the proportion equation
135,397.51 : 186,678.97 = 86,913.90 : x - Step 2: Convert to fraction form
135,397.51/186,678.97 = 86,913.90/x - Step 3: Cross multiply
135,397.51x = 186,678.97 × 86,913.90 - Step 4: Simplify right side
135,397.51x = 16,224,997,113.40 - Step 5: Solve for x
x = 16,224,997,113.40/135,397.51 - Step 6: Final answer
x = 119,832.32
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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.