Finding the Fourth Proportional to 122,720.96, 169,354.08 and 69,728.96
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Solution
The fourth proportional to 122,720.96, 169,354.08 and 69,728.96 is: 96,225.48
Step by Step Solution
- Step 1: Write the proportion equation
122,720.96 : 169,354.08 = 69,728.96 : x - Step 2: Convert to fraction form
122,720.96/169,354.08 = 69,728.96/x - Step 3: Cross multiply
122,720.96x = 169,354.08 × 69,728.96 - Step 4: Simplify right side
122,720.96x = 11,808,883,870.16 - Step 5: Solve for x
x = 11,808,883,870.16/122,720.96 - Step 6: Final answer
x = 96,225.48
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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.