Finding the Fourth Proportional to 135,178.58, 186,543.14 and 74,747.68
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Solution
The fourth proportional to 135,178.58, 186,543.14 and 74,747.68 is: 103,149.97
Step by Step Solution
- Step 1: Write the proportion equation
135,178.58 : 186,543.14 = 74,747.68 : x - Step 2: Convert to fraction form
135,178.58/186,543.14 = 74,747.68/x - Step 3: Cross multiply
135,178.58x = 186,543.14 × 74,747.68 - Step 4: Simplify right side
135,178.58x = 13,943,666,934.92 - Step 5: Solve for x
x = 13,943,666,934.92/135,178.58 - Step 6: Final answer
x = 103,149.97
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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.