Finding the Fourth Proportional to 125,931.80, 188,897.49 and 86,368.97
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Solution
The fourth proportional to 125,931.80, 188,897.49 and 86,368.97 is: 129,553.31
Step by Step Solution
- Step 1: Write the proportion equation
125,931.80 : 188,897.49 = 86,368.97 : x - Step 2: Convert to fraction form
125,931.80/188,897.49 = 86,368.97/x - Step 3: Cross multiply
125,931.80x = 188,897.49 × 86,368.97 - Step 4: Simplify right side
125,931.80x = 16,314,882,119.13 - Step 5: Solve for x
x = 16,314,882,119.13/125,931.80 - Step 6: Final answer
x = 129,553.31
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1.5x scale
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.