Finding the Fourth Proportional to 156,430.08, 215,816.94 and 102,744.20
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Solution
The fourth proportional to 156,430.08, 215,816.94 and 102,744.20 is: 141,749.84
Step by Step Solution
- Step 1: Write the proportion equation
156,430.08 : 215,816.94 = 102,744.20 : x - Step 2: Convert to fraction form
156,430.08/215,816.94 = 102,744.20/x - Step 3: Cross multiply
156,430.08x = 215,816.94 × 102,744.20 - Step 4: Simplify right side
156,430.08x = 22,173,938,846.75 - Step 5: Solve for x
x = 22,173,938,846.75/156,430.08 - Step 6: Final answer
x = 141,749.84
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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.