Finding the Fourth Proportional to 118,438.30, 177,787.05 and 74,115.10
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Solution
The fourth proportional to 118,438.30, 177,787.05 and 74,115.10 is: 111,253.75
Step by Step Solution
- Step 1: Write the proportion equation
118,438.30 : 177,787.05 = 74,115.10 : x - Step 2: Convert to fraction form
118,438.30/177,787.05 = 74,115.10/x - Step 3: Cross multiply
118,438.30x = 177,787.05 × 74,115.10 - Step 4: Simplify right side
118,438.30x = 13,176,704,989.46 - Step 5: Solve for x
x = 13,176,704,989.46/118,438.30 - Step 6: Final answer
x = 111,253.75
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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.