Finding the Fourth Proportional to 138,328.68, 190,895.68 and 84,602.19
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Solution
The fourth proportional to 138,328.68, 190,895.68 and 84,602.19 is: 116,752.30
Step by Step Solution
- Step 1: Write the proportion equation
138,328.68 : 190,895.68 = 84,602.19 : x - Step 2: Convert to fraction form
138,328.68/190,895.68 = 84,602.19/x - Step 3: Cross multiply
138,328.68x = 190,895.68 × 84,602.19 - Step 4: Simplify right side
138,328.68x = 16,150,191,423.56 - Step 5: Solve for x
x = 16,150,191,423.56/138,328.68 - Step 6: Final answer
x = 116,752.30
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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.