Finding the Fourth Proportional to 105,357.99, 145,382.09 and 62,338.80
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Solution
The fourth proportional to 105,357.99, 145,382.09 and 62,338.80 is: 86,020.48
Step by Step Solution
- Step 1: Write the proportion equation
105,357.99 : 145,382.09 = 62,338.80 : x - Step 2: Convert to fraction form
105,357.99/145,382.09 = 62,338.80/x - Step 3: Cross multiply
105,357.99x = 145,382.09 × 62,338.80 - Step 4: Simplify right side
105,357.99x = 9,062,944,720.40 - Step 5: Solve for x
x = 9,062,944,720.40/105,357.99 - Step 6: Final answer
x = 86,020.48
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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.