Finding the Fourth Proportional to 135,372.58, 186,811.80 and 74,941.90
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Solution
The fourth proportional to 135,372.58, 186,811.80 and 74,941.90 is: 103,418.52
Step by Step Solution
- Step 1: Write the proportion equation
135,372.58 : 186,811.80 = 74,941.90 : x - Step 2: Convert to fraction form
135,372.58/186,811.80 = 74,941.90/x - Step 3: Cross multiply
135,372.58x = 186,811.80 × 74,941.90 - Step 4: Simplify right side
135,372.58x = 14,000,031,234.42 - Step 5: Solve for x
x = 14,000,031,234.42/135,372.58 - Step 6: Final answer
x = 103,418.52
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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.