Finding the Fourth Proportional to 121,844.93, 167,980.65 and 85,496.99
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Solution
The fourth proportional to 121,844.93, 167,980.65 and 85,496.99 is: 117,869.82
Step by Step Solution
- Step 1: Write the proportion equation
121,844.93 : 167,980.65 = 85,496.99 : x - Step 2: Convert to fraction form
121,844.93/167,980.65 = 85,496.99/x - Step 3: Cross multiply
121,844.93x = 167,980.65 × 85,496.99 - Step 4: Simplify right side
121,844.93x = 14,361,839,953.24 - Step 5: Solve for x
x = 14,361,839,953.24/121,844.93 - Step 6: Final answer
x = 117,869.82
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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.