Finding the Fourth Proportional to 143,122.04, 197,472.84 and 79,443.92
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Solution
The fourth proportional to 143,122.04, 197,472.84 and 79,443.92 is: 109,612.86
Step by Step Solution
- Step 1: Write the proportion equation
143,122.04 : 197,472.84 = 79,443.92 : x - Step 2: Convert to fraction form
143,122.04/197,472.84 = 79,443.92/x - Step 3: Cross multiply
143,122.04x = 197,472.84 × 79,443.92 - Step 4: Simplify right side
143,122.04x = 15,688,016,503.13 - Step 5: Solve for x
x = 15,688,016,503.13/143,122.04 - Step 6: Final answer
x = 109,612.86
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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.