Finding the Fourth Proportional to 118,645,602.73, 163,787,707.10 and 79,019,078.23
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Solution
The fourth proportional to 118,645,602.73, 163,787,707.10 and 79,019,078.23 is: 109,084,140.86
Step by Step Solution
- Step 1: Write the proportion equation
118,645,602.73 : 163,787,707.10 = 79,019,078.23 : x - Step 2: Convert to fraction form
118,645,602.73/163,787,707.10 = 79,019,078.23/x - Step 3: Cross multiply
118,645,602.73x = 163,787,707.10 × 79,019,078.23 - Step 4: Simplify right side
118,645,602.73x = 12,942,353,640,909,666 - Step 5: Solve for x
x = 12,942,353,640,909,666/118,645,602.73 - Step 6: Final answer
x = 109,084,140.86
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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.