Finding the Fourth Proportional to 120,395,599.20, 180,582,901.20 and 39,616,567.20
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Solution
The fourth proportional to 120,395,599.20, 180,582,901.20 and 39,616,567.20 is: 59,421,396.53
Step by Step Solution
- Step 1: Write the proportion equation
120,395,599.20 : 180,582,901.20 = 39,616,567.20 : x - Step 2: Convert to fraction form
120,395,599.20/180,582,901.20 = 39,616,567.20/x - Step 3: Cross multiply
120,395,599.20x = 180,582,901.20 × 39,616,567.20 - Step 4: Simplify right side
120,395,599.20x = 7,154,074,640,560,761 - Step 5: Solve for x
x = 7,154,074,640,560,761/120,395,599.20 - Step 6: Final answer
x = 59,421,396.53
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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.