Finding the Fourth Proportional to 135,479.52, 186,878.64 and 81,730.08
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Solution
The fourth proportional to 135,479.52, 186,878.64 and 81,730.08 is: 112,737.38
Step by Step Solution
- Step 1: Write the proportion equation
135,479.52 : 186,878.64 = 81,730.08 : x - Step 2: Convert to fraction form
135,479.52/186,878.64 = 81,730.08/x - Step 3: Cross multiply
135,479.52x = 186,878.64 × 81,730.08 - Step 4: Simplify right side
135,479.52x = 15,273,606,197.49 - Step 5: Solve for x
x = 15,273,606,197.49/135,479.52 - Step 6: Final answer
x = 112,737.38
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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.