Finding the Fourth Proportional to 99,696,936.80, 149,545,405.20 and 65,656,719.20
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Solution
The fourth proportional to 99,696,936.80, 149,545,405.20 and 65,656,719.20 is: 98,485,078.80
Step by Step Solution
- Step 1: Write the proportion equation
99,696,936.80 : 149,545,405.20 = 65,656,719.20 : x - Step 2: Convert to fraction form
99,696,936.80/149,545,405.20 = 65,656,719.20/x - Step 3: Cross multiply
99,696,936.80x = 149,545,405.20 × 65,656,719.20 - Step 4: Simplify right side
99,696,936.80x = 9,818,660,676,866,620 - Step 5: Solve for x
x = 9,818,660,676,866,620/99,696,936.80 - Step 6: Final answer
x = 98,485,078.80
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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.