Finding the Fourth Proportional to 122,282.08, 168,785.28 and 79,847.20
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Solution
The fourth proportional to 122,282.08, 168,785.28 and 79,847.20 is: 110,212.65
Step by Step Solution
- Step 1: Write the proportion equation
122,282.08 : 168,785.28 = 79,847.20 : x - Step 2: Convert to fraction form
122,282.08/168,785.28 = 79,847.20/x - Step 3: Cross multiply
122,282.08x = 168,785.28 × 79,847.20 - Step 4: Simplify right side
122,282.08x = 13,477,032,009.22 - Step 5: Solve for x
x = 13,477,032,009.22/122,282.08 - Step 6: Final answer
x = 110,212.65
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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.