Finding the Fourth Proportional to 135,914.32, 187,564.08 and 74,663.09
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Solution
The fourth proportional to 135,914.32, 187,564.08 and 74,663.09 is: 103,036.34
Step by Step Solution
- Step 1: Write the proportion equation
135,914.32 : 187,564.08 = 74,663.09 : x - Step 2: Convert to fraction form
135,914.32/187,564.08 = 74,663.09/x - Step 3: Cross multiply
135,914.32x = 187,564.08 × 74,663.09 - Step 4: Simplify right side
135,914.32x = 14,004,113,785.81 - Step 5: Solve for x
x = 14,004,113,785.81/135,914.32 - Step 6: Final answer
x = 103,036.34
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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.