Finding the Fourth Proportional to 128,304,801.60, 192,457,202.40 and 104,118,331.20
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Solution
The fourth proportional to 128,304,801.60, 192,457,202.40 and 104,118,331.20 is: 156,177,496.80
Step by Step Solution
- Step 1: Write the proportion equation
128,304,801.60 : 192,457,202.40 = 104,118,331.20 : x - Step 2: Convert to fraction form
128,304,801.60/192,457,202.40 = 104,118,331.20/x - Step 3: Cross multiply
128,304,801.60x = 192,457,202.40 × 104,118,331.20 - Step 4: Simplify right side
128,304,801.60x = 20,038,322,741,308,636 - Step 5: Solve for x
x = 20,038,322,741,308,636/128,304,801.60 - Step 6: Final answer
x = 156,177,496.80
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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.