Finding the Fourth Proportional to 135,415.58, 186,871.19 and 74,984.91
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Solution
The fourth proportional to 135,415.58, 186,871.19 and 74,984.91 is: 103,477.90
Step by Step Solution
- Step 1: Write the proportion equation
135,415.58 : 186,871.19 = 74,984.91 : x - Step 2: Convert to fraction form
135,415.58/186,871.19 = 74,984.91/x - Step 3: Cross multiply
135,415.58x = 186,871.19 × 74,984.91 - Step 4: Simplify right side
135,415.58x = 14,012,518,988.82 - Step 5: Solve for x
x = 14,012,518,988.82/135,415.58 - Step 6: Final answer
x = 103,477.90
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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.