Finding the Fourth Proportional to 164,953.80, 247,430.70 and 86,221.80
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Solution
The fourth proportional to 164,953.80, 247,430.70 and 86,221.80 is: 129,332.70
Step by Step Solution
- Step 1: Write the proportion equation
164,953.80 : 247,430.70 = 86,221.80 : x - Step 2: Convert to fraction form
164,953.80/247,430.70 = 86,221.80/x - Step 3: Cross multiply
164,953.80x = 247,430.70 × 86,221.80 - Step 4: Simplify right side
164,953.80x = 21,333,920,329.26 - Step 5: Solve for x
x = 21,333,920,329.26/164,953.80 - Step 6: Final answer
x = 129,332.70
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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.