Finding the Fourth Proportional to 140,400.24, 193,729.93 and 79,972.08
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Solution
The fourth proportional to 140,400.24, 193,729.93 and 79,972.08 is: 110,348.71
Step by Step Solution
- Step 1: Write the proportion equation
140,400.24 : 193,729.93 = 79,972.08 : x - Step 2: Convert to fraction form
140,400.24/193,729.93 = 79,972.08/x - Step 3: Cross multiply
140,400.24x = 193,729.93 × 79,972.08 - Step 4: Simplify right side
140,400.24x = 15,492,984,533.94 - Step 5: Solve for x
x = 15,492,984,533.94/140,400.24 - Step 6: Final answer
x = 110,348.71
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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.