Finding the Fourth Proportional to 143,237.67, 213,805.09 and 132,681.75
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Solution
The fourth proportional to 143,237.67, 213,805.09 and 132,681.75 is: 198,048.69
Step by Step Solution
- Step 1: Write the proportion equation
143,237.67 : 213,805.09 = 132,681.75 : x - Step 2: Convert to fraction form
143,237.67/213,805.09 = 132,681.75/x - Step 3: Cross multiply
143,237.67x = 213,805.09 × 132,681.75 - Step 4: Simplify right side
143,237.67x = 28,368,033,500.11 - Step 5: Solve for x
x = 28,368,033,500.11/143,237.67 - Step 6: Final answer
x = 198,048.69
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.