Finding the Fourth Proportional to 121,720.08, 167,964.12 and 68,000.88
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Solution
The fourth proportional to 121,720.08, 167,964.12 and 68,000.88 is: 93,835.86
Step by Step Solution
- Step 1: Write the proportion equation
121,720.08 : 167,964.12 = 68,000.88 : x - Step 2: Convert to fraction form
121,720.08/167,964.12 = 68,000.88/x - Step 3: Cross multiply
121,720.08x = 167,964.12 × 68,000.88 - Step 4: Simplify right side
121,720.08x = 11,421,707,968.43 - Step 5: Solve for x
x = 11,421,707,968.43/121,720.08 - Step 6: Final answer
x = 93,835.86
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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.