Finding the Fourth Proportional to 136,315.60, 188,110.92 and 76,688.08
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Solution
The fourth proportional to 136,315.60, 188,110.92 and 76,688.08 is: 105,826.96
Step by Step Solution
- Step 1: Write the proportion equation
136,315.60 : 188,110.92 = 76,688.08 : x - Step 2: Convert to fraction form
136,315.60/188,110.92 = 76,688.08/x - Step 3: Cross multiply
136,315.60x = 188,110.92 × 76,688.08 - Step 4: Simplify right side
136,315.60x = 14,425,865,281.83 - Step 5: Solve for x
x = 14,425,865,281.83/136,315.60 - Step 6: Final answer
x = 105,826.96
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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.