Finding the Fourth Proportional to 177,987.80, 266,981.70 and 72,771.80
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Solution
The fourth proportional to 177,987.80, 266,981.70 and 72,771.80 is: 109,157.70
Step by Step Solution
- Step 1: Write the proportion equation
177,987.80 : 266,981.70 = 72,771.80 : x - Step 2: Convert to fraction form
177,987.80/266,981.70 = 72,771.80/x - Step 3: Cross multiply
177,987.80x = 266,981.70 × 72,771.80 - Step 4: Simplify right side
177,987.80x = 19,428,738,876.06 - Step 5: Solve for x
x = 19,428,738,876.06/177,987.80 - Step 6: Final answer
x = 109,157.70
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1.5x scale
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.