Finding the Fourth Proportional to 120,384,844.80, 180,577,267.20 and 86,624,563.20
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Solution
The fourth proportional to 120,384,844.80, 180,577,267.20 and 86,624,563.20 is: 129,936,844.80
Step by Step Solution
- Step 1: Write the proportion equation
120,384,844.80 : 180,577,267.20 = 86,624,563.20 : x - Step 2: Convert to fraction form
120,384,844.80/180,577,267.20 = 86,624,563.20/x - Step 3: Cross multiply
120,384,844.80x = 180,577,267.20 × 86,624,563.20 - Step 4: Simplify right side
120,384,844.80x = 15,642,426,895,049,686 - Step 5: Solve for x
x = 15,642,426,895,049,686/120,384,844.80 - Step 6: Final answer
x = 129,936,844.80
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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.