Finding the Fourth Proportional to 125,631.60, 173,386.36 and 74,644.74
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Solution
The fourth proportional to 125,631.60, 173,386.36 and 74,644.74 is: 103,018.51
Step by Step Solution
- Step 1: Write the proportion equation
125,631.60 : 173,386.36 = 74,644.74 : x - Step 2: Convert to fraction form
125,631.60/173,386.36 = 74,644.74/x - Step 3: Cross multiply
125,631.60x = 173,386.36 × 74,644.74 - Step 4: Simplify right side
125,631.60x = 12,942,379,761.75 - Step 5: Solve for x
x = 12,942,379,761.75/125,631.60 - Step 6: Final answer
x = 103,018.51
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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.