Finding the Fourth Proportional to 100,145,724.96, 149,959,876.73 and 69,117,126.65
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Solution
The fourth proportional to 100,145,724.96, 149,959,876.73 and 69,117,126.65 is: 103,497,136.75
Step by Step Solution
- Step 1: Write the proportion equation
100,145,724.96 : 149,959,876.73 = 69,117,126.65 : x - Step 2: Convert to fraction form
100,145,724.96/149,959,876.73 = 69,117,126.65/x - Step 3: Cross multiply
100,145,724.96x = 149,959,876.73 × 69,117,126.65 - Step 4: Simplify right side
100,145,724.96x = 10,364,795,791,270,412 - Step 5: Solve for x
x = 10,364,795,791,270,412/100,145,724.96 - Step 6: Final answer
x = 103,497,136.75
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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.