Finding the Fourth Proportional to 122,763.08, 169,414.80 and 72,462.08
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Solution
The fourth proportional to 122,763.08, 169,414.80 and 72,462.08 is: 99,998.70
Step by Step Solution
- Step 1: Write the proportion equation
122,763.08 : 169,414.80 = 72,462.08 : x - Step 2: Convert to fraction form
122,763.08/169,414.80 = 72,462.08/x - Step 3: Cross multiply
122,763.08x = 169,414.80 × 72,462.08 - Step 4: Simplify right side
122,763.08x = 12,276,148,790.78 - Step 5: Solve for x
x = 12,276,148,790.78/122,763.08 - Step 6: Final answer
x = 99,998.70
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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.