Finding the Fourth Proportional to 143,398.38, 197,887.14 and 79,735.62
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Solution
The fourth proportional to 143,398.38, 197,887.14 and 79,735.62 is: 110,033.70
Step by Step Solution
- Step 1: Write the proportion equation
143,398.38 : 197,887.14 = 79,735.62 : x - Step 2: Convert to fraction form
143,398.38/197,887.14 = 79,735.62/x - Step 3: Cross multiply
143,398.38x = 197,887.14 × 79,735.62 - Step 4: Simplify right side
143,398.38x = 15,778,653,797.93 - Step 5: Solve for x
x = 15,778,653,797.93/143,398.38 - Step 6: Final answer
x = 110,033.70
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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.