Finding the Fourth Proportional to 134,718.60, 185,907.40 and 74,291.79
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Solution
The fourth proportional to 134,718.60, 185,907.40 and 74,291.79 is: 102,520.32
Step by Step Solution
- Step 1: Write the proportion equation
134,718.60 : 185,907.40 = 74,291.79 : x - Step 2: Convert to fraction form
134,718.60/185,907.40 = 74,291.79/x - Step 3: Cross multiply
134,718.60x = 185,907.40 × 74,291.79 - Step 4: Simplify right side
134,718.60x = 13,811,393,520.25 - Step 5: Solve for x
x = 13,811,393,520.25/134,718.60 - Step 6: Final answer
x = 102,520.32
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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.