Finding the Fourth Proportional to 177,991.80, 266,987.70 and 72,775.80
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Solution
The fourth proportional to 177,991.80, 266,987.70 and 72,775.80 is: 109,163.70
Step by Step Solution
- Step 1: Write the proportion equation
177,991.80 : 266,987.70 = 72,775.80 : x - Step 2: Convert to fraction form
177,991.80/266,987.70 = 72,775.80/x - Step 3: Cross multiply
177,991.80x = 266,987.70 × 72,775.80 - Step 4: Simplify right side
177,991.80x = 19,430,243,457.66 - Step 5: Solve for x
x = 19,430,243,457.66/177,991.80 - Step 6: Final answer
x = 109,163.70
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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.