Finding the Fourth Proportional to 103,923.05, 143,345.43 and 71,658.99
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Solution
The fourth proportional to 103,923.05, 143,345.43 and 71,658.99 is: 98,842.26
Step by Step Solution
- Step 1: Write the proportion equation
103,923.05 : 143,345.43 = 71,658.99 : x - Step 2: Convert to fraction form
103,923.05/143,345.43 = 71,658.99/x - Step 3: Cross multiply
103,923.05x = 143,345.43 × 71,658.99 - Step 4: Simplify right side
103,923.05x = 10,271,988,734.92 - Step 5: Solve for x
x = 10,271,988,734.92/103,923.05 - Step 6: Final answer
x = 98,842.26
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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.