Finding the Fourth Proportional to 135,247.18, 186,639.51 and 74,813.08
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Solution
The fourth proportional to 135,247.18, 186,639.51 and 74,813.08 is: 103,241.17
Step by Step Solution
- Step 1: Write the proportion equation
135,247.18 : 186,639.51 = 74,813.08 : x - Step 2: Convert to fraction form
135,247.18/186,639.51 = 74,813.08/x - Step 3: Cross multiply
135,247.18x = 186,639.51 × 74,813.08 - Step 4: Simplify right side
135,247.18x = 13,963,076,592.79 - Step 5: Solve for x
x = 13,963,076,592.79/135,247.18 - Step 6: Final answer
x = 103,241.17
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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.