Finding the Fourth Proportional to 149,167.49, 205,815.21 and 87,916.12
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Solution
The fourth proportional to 149,167.49, 205,815.21 and 87,916.12 is: 121,303.07
Step by Step Solution
- Step 1: Write the proportion equation
149,167.49 : 205,815.21 = 87,916.12 : x - Step 2: Convert to fraction form
149,167.49/205,815.21 = 87,916.12/x - Step 3: Cross multiply
149,167.49x = 205,815.21 × 87,916.12 - Step 4: Simplify right side
149,167.49x = 18,094,473,855.96 - Step 5: Solve for x
x = 18,094,473,855.96/149,167.49 - Step 6: Final answer
x = 121,303.07
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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.