Finding the Fourth Proportional to 145,542,423.60, 218,313,635.40 and 133,638,145.20
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Solution
The fourth proportional to 145,542,423.60, 218,313,635.40 and 133,638,145.20 is: 200,457,217.80
Step by Step Solution
- Step 1: Write the proportion equation
145,542,423.60 : 218,313,635.40 = 133,638,145.20 : x - Step 2: Convert to fraction form
145,542,423.60/218,313,635.40 = 133,638,145.20/x - Step 3: Cross multiply
145,542,423.60x = 218,313,635.40 × 133,638,145.20 - Step 4: Simplify right side
145,542,423.60x = 29,175,029,306,725,060 - Step 5: Solve for x
x = 29,175,029,306,725,060/145,542,423.60 - Step 6: Final answer
x = 200,457,217.80
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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.