Finding the Fourth Proportional to 121,646.08, 167,869.92 and 67,931.92
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Solution
The fourth proportional to 121,646.08, 167,869.92 and 67,931.92 is: 93,745.12
Step by Step Solution
- Step 1: Write the proportion equation
121,646.08 : 167,869.92 = 67,931.92 : x - Step 2: Convert to fraction form
121,646.08/167,869.92 = 67,931.92/x - Step 3: Cross multiply
121,646.08x = 167,869.92 × 67,931.92 - Step 4: Simplify right side
121,646.08x = 11,403,725,975.85 - Step 5: Solve for x
x = 11,403,725,975.85/121,646.08 - Step 6: Final answer
x = 93,745.12
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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.