Finding the Fourth Proportional to 106,722.05, 147,261.47 and 61,382.79
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Solution
The fourth proportional to 106,722.05, 147,261.47 and 61,382.79 is: 84,699.65
Step by Step Solution
- Step 1: Write the proportion equation
106,722.05 : 147,261.47 = 61,382.79 : x - Step 2: Convert to fraction form
106,722.05/147,261.47 = 61,382.79/x - Step 3: Cross multiply
106,722.05x = 147,261.47 × 61,382.79 - Step 4: Simplify right side
106,722.05x = 9,039,319,581.19 - Step 5: Solve for x
x = 9,039,319,581.19/106,722.05 - Step 6: Final answer
x = 84,699.65
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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.