Finding the Fourth Proportional to 98,638.87, 136,129.94 and 60,398.23
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Solution
The fourth proportional to 98,638.87, 136,129.94 and 60,398.23 is: 83,354.64
Step by Step Solution
- Step 1: Write the proportion equation
98,638.87 : 136,129.94 = 60,398.23 : x - Step 2: Convert to fraction form
98,638.87/136,129.94 = 60,398.23/x - Step 3: Cross multiply
98,638.87x = 136,129.94 × 60,398.23 - Step 4: Simplify right side
98,638.87x = 8,222,007,426.01 - Step 5: Solve for x
x = 8,222,007,426.01/98,638.87 - Step 6: Final answer
x = 83,354.64
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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.