Finding the Fourth Proportional to 125,777.61, 173,585.84 and 72,069.75
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Solution
The fourth proportional to 125,777.61, 173,585.84 and 72,069.75 is: 99,463.55
Step by Step Solution
- Step 1: Write the proportion equation
125,777.61 : 173,585.84 = 72,069.75 : x - Step 2: Convert to fraction form
125,777.61/173,585.84 = 72,069.75/x - Step 3: Cross multiply
125,777.61x = 173,585.84 × 72,069.75 - Step 4: Simplify right side
125,777.61x = 12,510,287,731.99 - Step 5: Solve for x
x = 12,510,287,731.99/125,777.61 - Step 6: Final answer
x = 99,463.55
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1.5x scale
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.