Finding the Fourth Proportional to 134,989.97, 186,288.12 and 78,401.34
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Solution
The fourth proportional to 134,989.97, 186,288.12 and 78,401.34 is: 108,194.99
Step by Step Solution
- Step 1: Write the proportion equation
134,989.97 : 186,288.12 = 78,401.34 : x - Step 2: Convert to fraction form
134,989.97/186,288.12 = 78,401.34/x - Step 3: Cross multiply
134,989.97x = 186,288.12 × 78,401.34 - Step 4: Simplify right side
134,989.97x = 14,605,238,234.08 - Step 5: Solve for x
x = 14,605,238,234.08/134,989.97 - Step 6: Final answer
x = 108,194.99
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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.