Finding the Fourth Proportional to 135,781.68, 203,646.15 and 68,295.72
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Solution
The fourth proportional to 135,781.68, 203,646.15 and 68,295.72 is: 102,430.32
Step by Step Solution
- Step 1: Write the proportion equation
135,781.68 : 203,646.15 = 68,295.72 : x - Step 2: Convert to fraction form
135,781.68/203,646.15 = 68,295.72/x - Step 3: Cross multiply
135,781.68x = 203,646.15 × 68,295.72 - Step 4: Simplify right side
135,781.68x = 13,908,160,439.48 - Step 5: Solve for x
x = 13,908,160,439.48/135,781.68 - Step 6: Final answer
x = 102,430.32
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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.