Finding the Fourth Proportional to 121,653.06, 167,856.88 and 67,929.81
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Solution
The fourth proportional to 121,653.06, 167,856.88 and 67,929.81 is: 93,729.55
Step by Step Solution
- Step 1: Write the proportion equation
121,653.06 : 167,856.88 = 67,929.81 : x - Step 2: Convert to fraction form
121,653.06/167,856.88 = 67,929.81/x - Step 3: Cross multiply
121,653.06x = 167,856.88 × 67,929.81 - Step 4: Simplify right side
121,653.06x = 11,402,486,425.23 - Step 5: Solve for x
x = 11,402,486,425.23/121,653.06 - Step 6: Final answer
x = 93,729.55
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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.