Finding the Fourth Proportional to 135,913.32, 187,562.70 and 74,662.09
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Solution
The fourth proportional to 135,913.32, 187,562.70 and 74,662.09 is: 103,034.96
Step by Step Solution
- Step 1: Write the proportion equation
135,913.32 : 187,562.70 = 74,662.09 : x - Step 2: Convert to fraction form
135,913.32/187,562.70 = 74,662.09/x - Step 3: Cross multiply
135,913.32x = 187,562.70 × 74,662.09 - Step 4: Simplify right side
135,913.32x = 14,003,823,282.51 - Step 5: Solve for x
x = 14,003,823,282.51/135,913.32 - Step 6: Final answer
x = 103,034.96
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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.