Finding the Fourth Proportional to 86,202,378.80, 120,985,661.20 and 86,202,378.80
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Solution
The fourth proportional to 86,202,378.80, 120,985,661.20 and 86,202,378.80 is: 120,985,661.20
Step by Step Solution
- Step 1: Write the proportion equation
86,202,378.80 : 120,985,661.20 = 86,202,378.80 : x - Step 2: Convert to fraction form
86,202,378.80/120,985,661.20 = 86,202,378.80/x - Step 3: Cross multiply
86,202,378.80x = 120,985,661.20 × 86,202,378.80 - Step 4: Simplify right side
86,202,378.80x = 10,429,251,796,130,862 - Step 5: Solve for x
x = 10,429,251,796,130,862/86,202,378.80 - Step 6: Final answer
x = 120,985,661.20
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Why These Related Problems?
These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.