Finding the Fourth Proportional to 121,799.13, 168,070.98 and 76,462.62
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Solution
The fourth proportional to 121,799.13, 168,070.98 and 76,462.62 is: 105,511.00
Step by Step Solution
- Step 1: Write the proportion equation
121,799.13 : 168,070.98 = 76,462.62 : x - Step 2: Convert to fraction form
121,799.13/168,070.98 = 76,462.62/x - Step 3: Cross multiply
121,799.13x = 168,070.98 × 76,462.62 - Step 4: Simplify right side
121,799.13x = 12,851,147,476.77 - Step 5: Solve for x
x = 12,851,147,476.77/121,799.13 - Step 6: Final answer
x = 105,511.00
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.