Finding the Fourth Proportional to 122,633.78, 169,236.14 and 74,235.06
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Solution
The fourth proportional to 122,633.78, 169,236.14 and 74,235.06 is: 102,445.31
Step by Step Solution
- Step 1: Write the proportion equation
122,633.78 : 169,236.14 = 74,235.06 : x - Step 2: Convert to fraction form
122,633.78/169,236.14 = 74,235.06/x - Step 3: Cross multiply
122,633.78x = 169,236.14 × 74,235.06 - Step 4: Simplify right side
122,633.78x = 12,563,254,635.89 - Step 5: Solve for x
x = 12,563,254,635.89/122,633.78 - Step 6: Final answer
x = 102,445.31
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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.