Finding the Fourth Proportional to 129,310,330.70, 193,965,496.05 and 115,280,288.30
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Solution
The fourth proportional to 129,310,330.70, 193,965,496.05 and 115,280,288.30 is: 172,920,432.45
Step by Step Solution
- Step 1: Write the proportion equation
129,310,330.70 : 193,965,496.05 = 115,280,288.30 : x - Step 2: Convert to fraction form
129,310,330.70/193,965,496.05 = 115,280,288.30/x - Step 3: Cross multiply
129,310,330.70x = 193,965,496.05 × 115,280,288.30 - Step 4: Simplify right side
129,310,330.70x = 22,360,398,304,896,512 - Step 5: Solve for x
x = 22,360,398,304,896,512/129,310,330.70 - Step 6: Final answer
x = 172,920,432.45
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.