Finding the Fourth Proportional to 123,659,478.63, 170,643,416.99 and 68,651,795.43
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Solution
The fourth proportional to 123,659,478.63, 170,643,416.99 and 68,651,795.43 is: 94,735,778.32
Step by Step Solution
- Step 1: Write the proportion equation
123,659,478.63 : 170,643,416.99 = 68,651,795.43 : x - Step 2: Convert to fraction form
123,659,478.63/170,643,416.99 = 68,651,795.43/x - Step 3: Cross multiply
123,659,478.63x = 170,643,416.99 × 68,651,795.43 - Step 4: Simplify right side
123,659,478.63x = 11,714,976,954,330,410 - Step 5: Solve for x
x = 11,714,976,954,330,410/123,659,478.63 - Step 6: Final answer
x = 94,735,778.32
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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.