Finding the Fourth Proportional to 98,647.20, 136,129.14 and 56,202.12
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Solution
The fourth proportional to 98,647.20, 136,129.14 and 56,202.12 is: 77,556.65
Step by Step Solution
- Step 1: Write the proportion equation
98,647.20 : 136,129.14 = 56,202.12 : x - Step 2: Convert to fraction form
98,647.20/136,129.14 = 56,202.12/x - Step 3: Cross multiply
98,647.20x = 136,129.14 × 56,202.12 - Step 4: Simplify right side
98,647.20x = 7,650,746,261.78 - Step 5: Solve for x
x = 7,650,746,261.78/98,647.20 - Step 6: Final answer
x = 77,556.65
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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.