Finding the Fourth Proportional to 138,765.15, 191,496.10 and 75,102.95
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Solution
The fourth proportional to 138,765.15, 191,496.10 and 75,102.95 is: 103,642.17
Step by Step Solution
- Step 1: Write the proportion equation
138,765.15 : 191,496.10 = 75,102.95 : x - Step 2: Convert to fraction form
138,765.15/191,496.10 = 75,102.95/x - Step 3: Cross multiply
138,765.15x = 191,496.10 × 75,102.95 - Step 4: Simplify right side
138,765.15x = 14,381,921,378.13 - Step 5: Solve for x
x = 14,381,921,378.13/138,765.15 - Step 6: Final answer
x = 103,642.17
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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.