Finding the Fourth Proportional to 121,895.96, 168,252.18 and 70,920.68
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Solution
The fourth proportional to 121,895.96, 168,252.18 and 70,920.68 is: 97,891.34
Step by Step Solution
- Step 1: Write the proportion equation
121,895.96 : 168,252.18 = 70,920.68 : x - Step 2: Convert to fraction form
121,895.96/168,252.18 = 70,920.68/x - Step 3: Cross multiply
121,895.96x = 168,252.18 × 70,920.68 - Step 4: Simplify right side
121,895.96x = 11,932,559,017.08 - Step 5: Solve for x
x = 11,932,559,017.08/121,895.96 - Step 6: Final answer
x = 97,891.34
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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.