Finding the Fourth Proportional to 140,118.92, 193,368.36 and 79,698.26
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Solution
The fourth proportional to 140,118.92, 193,368.36 and 79,698.26 is: 109,986.02
Step by Step Solution
- Step 1: Write the proportion equation
140,118.92 : 193,368.36 = 79,698.26 : x - Step 2: Convert to fraction form
140,118.92/193,368.36 = 79,698.26/x - Step 3: Cross multiply
140,118.92x = 193,368.36 × 79,698.26 - Step 4: Simplify right side
140,118.92x = 15,411,121,831.05 - Step 5: Solve for x
x = 15,411,121,831.05/140,118.92 - Step 6: Final answer
x = 109,986.02
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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.