Finding the Fourth Proportional to 138,749.08, 191,475.08 and 75,088.20
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Solution
The fourth proportional to 138,749.08, 191,475.08 and 75,088.20 is: 103,622.45
Step by Step Solution
- Step 1: Write the proportion equation
138,749.08 : 191,475.08 = 75,088.20 : x - Step 2: Convert to fraction form
138,749.08/191,475.08 = 75,088.20/x - Step 3: Cross multiply
138,749.08x = 191,475.08 × 75,088.20 - Step 4: Simplify right side
138,749.08x = 14,377,519,102.06 - Step 5: Solve for x
x = 14,377,519,102.06/138,749.08 - Step 6: Final answer
x = 103,622.45
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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.