Finding the Fourth Proportional to 141,401.16, 195,134.10 and 77,742.99
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Solution
The fourth proportional to 141,401.16, 195,134.10 and 77,742.99 is: 107,285.60
Step by Step Solution
- Step 1: Write the proportion equation
141,401.16 : 195,134.10 = 77,742.99 : x - Step 2: Convert to fraction form
141,401.16/195,134.10 = 77,742.99/x - Step 3: Cross multiply
141,401.16x = 195,134.10 × 77,742.99 - Step 4: Simplify right side
141,401.16x = 15,170,308,384.96 - Step 5: Solve for x
x = 15,170,308,384.96/141,401.16 - Step 6: Final answer
x = 107,285.60
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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.