Finding the Fourth Proportional to 139,988.58, 209,982.87 and 51,203.67
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Solution
The fourth proportional to 139,988.58, 209,982.87 and 51,203.67 is: 76,805.51
Step by Step Solution
- Step 1: Write the proportion equation
139,988.58 : 209,982.87 = 51,203.67 : x - Step 2: Convert to fraction form
139,988.58/209,982.87 = 51,203.67/x - Step 3: Cross multiply
139,988.58x = 209,982.87 × 51,203.67 - Step 4: Simplify right side
139,988.58x = 10,751,893,581.13 - Step 5: Solve for x
x = 10,751,893,581.13/139,988.58 - Step 6: Final answer
x = 76,805.51
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.