Finding the Fourth Proportional to 132,479.79, 182,869.05 and 78,764.55
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Solution
The fourth proportional to 132,479.79, 182,869.05 and 78,764.55 is: 108,722.99
Step by Step Solution
- Step 1: Write the proportion equation
132,479.79 : 182,869.05 = 78,764.55 : x - Step 2: Convert to fraction form
132,479.79/182,869.05 = 78,764.55/x - Step 3: Cross multiply
132,479.79x = 182,869.05 × 78,764.55 - Step 4: Simplify right side
132,479.79x = 14,403,598,432.18 - Step 5: Solve for x
x = 14,403,598,432.18/132,479.79 - Step 6: Final answer
x = 108,722.99
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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.