Finding the Fourth Proportional to 135,342.57, 186,753.20 and 74,913.06
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Solution
The fourth proportional to 135,342.57, 186,753.20 and 74,913.06 is: 103,369.20
Step by Step Solution
- Step 1: Write the proportion equation
135,342.57 : 186,753.20 = 74,913.06 : x - Step 2: Convert to fraction form
135,342.57/186,753.20 = 74,913.06/x - Step 3: Cross multiply
135,342.57x = 186,753.20 × 74,913.06 - Step 4: Simplify right side
135,342.57x = 13,990,253,302.23 - Step 5: Solve for x
x = 13,990,253,302.23/135,342.57 - Step 6: Final answer
x = 103,369.20
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1.5x scale
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.