Finding the Fourth Proportional to 137,787.85, 190,145.58 and 77,356.99
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Solution
The fourth proportional to 137,787.85, 190,145.58 and 77,356.99 is: 106,751.72
Step by Step Solution
- Step 1: Write the proportion equation
137,787.85 : 190,145.58 = 77,356.99 : x - Step 2: Convert to fraction form
137,787.85/190,145.58 = 77,356.99/x - Step 3: Cross multiply
137,787.85x = 190,145.58 × 77,356.99 - Step 4: Simplify right side
137,787.85x = 14,709,089,730.60 - Step 5: Solve for x
x = 14,709,089,730.60/137,787.85 - Step 6: Final answer
x = 106,751.72
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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.