Finding the Fourth Proportional to 124,861.61, 172,303.94 and 71,142.08
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Solution
The fourth proportional to 124,861.61, 172,303.94 and 71,142.08 is: 98,173.17
Step by Step Solution
- Step 1: Write the proportion equation
124,861.61 : 172,303.94 = 71,142.08 : x - Step 2: Convert to fraction form
124,861.61/172,303.94 = 71,142.08/x - Step 3: Cross multiply
124,861.61x = 172,303.94 × 71,142.08 - Step 4: Simplify right side
124,861.61x = 12,258,060,000.13 - Step 5: Solve for x
x = 12,258,060,000.13/124,861.61 - Step 6: Final answer
x = 98,173.17
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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.