Finding the Fourth Proportional to 106,513,687.20, 159,770,530.80 and 68,249,935.20
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Solution
The fourth proportional to 106,513,687.20, 159,770,530.80 and 68,249,935.20 is: 102,374,902.80
Step by Step Solution
- Step 1: Write the proportion equation
106,513,687.20 : 159,770,530.80 = 68,249,935.20 : x - Step 2: Convert to fraction form
106,513,687.20/159,770,530.80 = 68,249,935.20/x - Step 3: Cross multiply
106,513,687.20x = 159,770,530.80 × 68,249,935.20 - Step 4: Simplify right side
106,513,687.20x = 10,904,328,373,969,606 - Step 5: Solve for x
x = 10,904,328,373,969,606/106,513,687.20 - Step 6: Final answer
x = 102,374,902.80
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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.