Finding the Fourth Proportional to 122,297.20, 168,778.20 and 68,585.68
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Solution
The fourth proportional to 122,297.20, 168,778.20 and 68,585.68 is: 94,652.76
Step by Step Solution
- Step 1: Write the proportion equation
122,297.20 : 168,778.20 = 68,585.68 : x - Step 2: Convert to fraction form
122,297.20/168,778.20 = 68,585.68/x - Step 3: Cross multiply
122,297.20x = 168,778.20 × 68,585.68 - Step 4: Simplify right side
122,297.20x = 11,575,767,616.18 - Step 5: Solve for x
x = 11,575,767,616.18/122,297.20 - Step 6: Final answer
x = 94,652.76
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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.