Finding the Fourth Proportional to 135,917.76, 203,869.44 and 42,412.80
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Solution
The fourth proportional to 135,917.76, 203,869.44 and 42,412.80 is: 63,616.95
Step by Step Solution
- Step 1: Write the proportion equation
135,917.76 : 203,869.44 = 42,412.80 : x - Step 2: Convert to fraction form
135,917.76/203,869.44 = 42,412.80/x - Step 3: Cross multiply
135,917.76x = 203,869.44 × 42,412.80 - Step 4: Simplify right side
135,917.76x = 8,646,673,784.83 - Step 5: Solve for x
x = 8,646,673,784.83/135,917.76 - Step 6: Final answer
x = 63,616.95
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.