Finding the Fourth Proportional to 121,708.08, 167,947.56 and 67,988.88
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Solution
The fourth proportional to 121,708.08, 167,947.56 and 67,988.88 is: 93,819.30
Step by Step Solution
- Step 1: Write the proportion equation
121,708.08 : 167,947.56 = 67,988.88 : x - Step 2: Convert to fraction form
121,708.08/167,947.56 = 67,988.88/x - Step 3: Cross multiply
121,708.08x = 167,947.56 × 67,988.88 - Step 4: Simplify right side
121,708.08x = 11,418,566,503.13 - Step 5: Solve for x
x = 11,418,566,503.13/121,708.08 - Step 6: Final answer
x = 93,819.30
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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.