Finding the Fourth Proportional to 122,585.63, 169,129.28 and 74,815.07
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Solution
The fourth proportional to 122,585.63, 169,129.28 and 74,815.07 is: 103,221.06
Step by Step Solution
- Step 1: Write the proportion equation
122,585.63 : 169,129.28 = 74,815.07 : x - Step 2: Convert to fraction form
122,585.63/169,129.28 = 74,815.07/x - Step 3: Cross multiply
122,585.63x = 169,129.28 × 74,815.07 - Step 4: Simplify right side
122,585.63x = 12,653,418,263.64 - Step 5: Solve for x
x = 12,653,418,263.64/122,585.63 - Step 6: Final answer
x = 103,221.06
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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.