Finding the Fourth Proportional to 106,356.74, 146,770.40 and 57,959.09
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Solution
The fourth proportional to 106,356.74, 146,770.40 and 57,959.09 is: 79,982.50
Step by Step Solution
- Step 1: Write the proportion equation
106,356.74 : 146,770.40 = 57,959.09 : x - Step 2: Convert to fraction form
106,356.74/146,770.40 = 57,959.09/x - Step 3: Cross multiply
106,356.74x = 146,770.40 × 57,959.09 - Step 4: Simplify right side
106,356.74x = 8,506,677,799.29 - Step 5: Solve for x
x = 8,506,677,799.29/106,356.74 - Step 6: Final answer
x = 79,982.50
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1.5x scale
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.