Finding the Fourth Proportional to 129,070.12, 193,488.54 and 89,645.80
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Solution
The fourth proportional to 129,070.12, 193,488.54 and 89,645.80 is: 134,387.69
Step by Step Solution
- Step 1: Write the proportion equation
129,070.12 : 193,488.54 = 89,645.80 : x - Step 2: Convert to fraction form
129,070.12/193,488.54 = 89,645.80/x - Step 3: Cross multiply
129,070.12x = 193,488.54 × 89,645.80 - Step 4: Simplify right side
129,070.12x = 17,345,434,959.13 - Step 5: Solve for x
x = 17,345,434,959.13/129,070.12 - Step 6: Final answer
x = 134,387.69
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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.