Finding the Fourth Proportional to 135,423.30, 186,881.84 and 74,992.64
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Solution
The fourth proportional to 135,423.30, 186,881.84 and 74,992.64 is: 103,488.56
Step by Step Solution
- Step 1: Write the proportion equation
135,423.30 : 186,881.84 = 74,992.64 : x - Step 2: Convert to fraction form
135,423.30/186,881.84 = 74,992.64/x - Step 3: Cross multiply
135,423.30x = 186,881.84 × 74,992.64 - Step 4: Simplify right side
135,423.30x = 14,014,762,549.66 - Step 5: Solve for x
x = 14,014,762,549.66/135,423.30 - Step 6: Final answer
x = 103,488.56
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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.