Finding the Fourth Proportional to 135,823.32, 187,445.28 and 78,473.79
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Solution
The fourth proportional to 135,823.32, 187,445.28 and 78,473.79 is: 108,299.09
Step by Step Solution
- Step 1: Write the proportion equation
135,823.32 : 187,445.28 = 78,473.79 : x - Step 2: Convert to fraction form
135,823.32/187,445.28 = 78,473.79/x - Step 3: Cross multiply
135,823.32x = 187,445.28 × 78,473.79 - Step 4: Simplify right side
135,823.32x = 14,709,541,539.21 - Step 5: Solve for x
x = 14,709,541,539.21/135,823.32 - Step 6: Final answer
x = 108,299.09
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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.