Finding the Fourth Proportional to 129,987.13, 194,980.70 and 46,881.13
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Solution
The fourth proportional to 129,987.13, 194,980.70 and 46,881.13 is: 70,321.70
Step by Step Solution
- Step 1: Write the proportion equation
129,987.13 : 194,980.70 = 46,881.13 : x - Step 2: Convert to fraction form
129,987.13/194,980.70 = 46,881.13/x - Step 3: Cross multiply
129,987.13x = 194,980.70 × 46,881.13 - Step 4: Simplify right side
129,987.13x = 9,140,915,544.19 - Step 5: Solve for x
x = 9,140,915,544.19/129,987.13 - Step 6: Final answer
x = 70,321.70
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.