Finding the Fourth Proportional to 121,217.08, 167,331.18 and 81,496.12
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Solution
The fourth proportional to 121,217.08, 167,331.18 and 81,496.12 is: 112,499.34
Step by Step Solution
- Step 1: Write the proportion equation
121,217.08 : 167,331.18 = 81,496.12 : x - Step 2: Convert to fraction form
121,217.08/167,331.18 = 81,496.12/x - Step 3: Cross multiply
121,217.08x = 167,331.18 × 81,496.12 - Step 4: Simplify right side
121,217.08x = 13,636,841,925.02 - Step 5: Solve for x
x = 13,636,841,925.02/121,217.08 - Step 6: Final answer
x = 112,499.34
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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.