Finding the Fourth Proportional to 135,178.45, 186,534.42 and 74,748.80
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Solution
The fourth proportional to 135,178.45, 186,534.42 and 74,748.80 is: 103,146.80
Step by Step Solution
- Step 1: Write the proportion equation
135,178.45 : 186,534.42 = 74,748.80 : x - Step 2: Convert to fraction form
135,178.45/186,534.42 = 74,748.80/x - Step 3: Cross multiply
135,178.45x = 186,534.42 × 74,748.80 - Step 4: Simplify right side
135,178.45x = 13,943,224,053.70 - Step 5: Solve for x
x = 13,943,224,053.70/135,178.45 - Step 6: Final answer
x = 103,146.80
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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.