Finding the Fourth Proportional to 128,751,022.24, 177,672,867.60 and 70,804,270.24
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Solution
The fourth proportional to 128,751,022.24, 177,672,867.60 and 70,804,270.24 is: 97,707,944.47
Step by Step Solution
- Step 1: Write the proportion equation
128,751,022.24 : 177,672,867.60 = 70,804,270.24 : x - Step 2: Convert to fraction form
128,751,022.24/177,672,867.60 = 70,804,270.24/x - Step 3: Cross multiply
128,751,022.24x = 177,672,867.60 × 70,804,270.24 - Step 4: Simplify right side
128,751,022.24x = 12,579,997,731,866,138 - Step 5: Solve for x
x = 12,579,997,731,866,138/128,751,022.24 - Step 6: Final answer
x = 97,707,944.47
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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.