Finding the Fourth Proportional to 106,901.70, 147,539.99 and 61,570.96
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Solution
The fourth proportional to 106,901.70, 147,539.99 and 61,570.96 is: 84,976.94
Step by Step Solution
- Step 1: Write the proportion equation
106,901.70 : 147,539.99 = 61,570.96 : x - Step 2: Convert to fraction form
106,901.70/147,539.99 = 61,570.96/x - Step 3: Cross multiply
106,901.70x = 147,539.99 × 61,570.96 - Step 4: Simplify right side
106,901.70x = 9,084,178,822.69 - Step 5: Solve for x
x = 9,084,178,822.69/106,901.70 - Step 6: Final answer
x = 84,976.94
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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.