Finding the Fourth Proportional to 122,776.18, 169,454.37 and 76,857.19
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Solution
The fourth proportional to 122,776.18, 169,454.37 and 76,857.19 is: 106,077.48
Step by Step Solution
- Step 1: Write the proportion equation
122,776.18 : 169,454.37 = 76,857.19 : x - Step 2: Convert to fraction form
122,776.18/169,454.37 = 76,857.19/x - Step 3: Cross multiply
122,776.18x = 169,454.37 × 76,857.19 - Step 4: Simplify right side
122,776.18x = 13,023,787,211.45 - Step 5: Solve for x
x = 13,023,787,211.45/122,776.18 - Step 6: Final answer
x = 106,077.48
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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.