Finding the Fourth Proportional to 112,154.70, 154,769.21 and 61,853.70
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Solution
The fourth proportional to 112,154.70, 154,769.21 and 61,853.70 is: 85,355.75
Step by Step Solution
- Step 1: Write the proportion equation
112,154.70 : 154,769.21 = 61,853.70 : x - Step 2: Convert to fraction form
112,154.70/154,769.21 = 61,853.70/x - Step 3: Cross multiply
112,154.70x = 154,769.21 × 61,853.70 - Step 4: Simplify right side
112,154.70x = 9,573,048,787.64 - Step 5: Solve for x
x = 9,573,048,787.64/112,154.70 - Step 6: Final answer
x = 85,355.75
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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.