Finding the Fourth Proportional to 123,136.75, 169,924.86 and 69,420.99
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Solution
The fourth proportional to 123,136.75, 169,924.86 and 69,420.99 is: 95,798.79
Step by Step Solution
- Step 1: Write the proportion equation
123,136.75 : 169,924.86 = 69,420.99 : x - Step 2: Convert to fraction form
123,136.75/169,924.86 = 69,420.99/x - Step 3: Cross multiply
123,136.75x = 169,924.86 × 69,420.99 - Step 4: Simplify right side
123,136.75x = 11,796,352,006.81 - Step 5: Solve for x
x = 11,796,352,006.81/123,136.75 - Step 6: Final answer
x = 95,798.79
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1.5x scale
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.