Finding the Fourth Proportional to 128,169,657.60, 192,254,486.40 and 93,905,491.20
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Solution
The fourth proportional to 128,169,657.60, 192,254,486.40 and 93,905,491.20 is: 140,858,236.80
Step by Step Solution
- Step 1: Write the proportion equation
128,169,657.60 : 192,254,486.40 = 93,905,491.20 : x - Step 2: Convert to fraction form
128,169,657.60/192,254,486.40 = 93,905,491.20/x - Step 3: Cross multiply
128,169,657.60x = 192,254,486.40 × 93,905,491.20 - Step 4: Simplify right side
128,169,657.60x = 18,053,751,980,795,720 - Step 5: Solve for x
x = 18,053,751,980,795,720/128,169,657.60 - Step 6: Final answer
x = 140,858,236.80
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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.