Finding the Fourth Proportional to 135,157.59, 186,501.20 and 74,720.07
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Solution
The fourth proportional to 135,157.59, 186,501.20 and 74,720.07 is: 103,104.70
Step by Step Solution
- Step 1: Write the proportion equation
135,157.59 : 186,501.20 = 74,720.07 : x - Step 2: Convert to fraction form
135,157.59/186,501.20 = 74,720.07/x - Step 3: Cross multiply
135,157.59x = 186,501.20 × 74,720.07 - Step 4: Simplify right side
135,157.59x = 13,935,382,345.48 - Step 5: Solve for x
x = 13,935,382,345.48/135,157.59 - Step 6: Final answer
x = 103,104.70
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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.