Finding the Fourth Proportional to 135,463.68, 186,980.64 and 87,720.48
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Solution
The fourth proportional to 135,463.68, 186,980.64 and 87,720.48 is: 121,080.66
Step by Step Solution
- Step 1: Write the proportion equation
135,463.68 : 186,980.64 = 87,720.48 : x - Step 2: Convert to fraction form
135,463.68/186,980.64 = 87,720.48/x - Step 3: Cross multiply
135,463.68x = 186,980.64 × 87,720.48 - Step 4: Simplify right side
135,463.68x = 16,402,031,491.51 - Step 5: Solve for x
x = 16,402,031,491.51/135,463.68 - Step 6: Final answer
x = 121,080.66
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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.