Finding the Fourth Proportional to 134,911.68, 186,149.16 and 78,292.68
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Solution
The fourth proportional to 134,911.68, 186,149.16 and 78,292.68 is: 108,027.09
Step by Step Solution
- Step 1: Write the proportion equation
134,911.68 : 186,149.16 = 78,292.68 : x - Step 2: Convert to fraction form
134,911.68/186,149.16 = 78,292.68/x - Step 3: Cross multiply
134,911.68x = 186,149.16 × 78,292.68 - Step 4: Simplify right side
134,911.68x = 14,574,116,616.15 - Step 5: Solve for x
x = 14,574,116,616.15/134,911.68 - Step 6: Final answer
x = 108,027.09
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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.