Finding the Fourth Proportional to 131,120,798.44, 180,941,959.02 and 72,382,202.68
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Solution
The fourth proportional to 131,120,798.44, 180,941,959.02 and 72,382,202.68 is: 99,884,821.53
Step by Step Solution
- Step 1: Write the proportion equation
131,120,798.44 : 180,941,959.02 = 72,382,202.68 : x - Step 2: Convert to fraction form
131,120,798.44/180,941,959.02 = 72,382,202.68/x - Step 3: Cross multiply
131,120,798.44x = 180,941,959.02 × 72,382,202.68 - Step 4: Simplify right side
131,120,798.44x = 13,096,977,551,101,896 - Step 5: Solve for x
x = 13,096,977,551,101,896/131,120,798.44 - Step 6: Final answer
x = 99,884,821.53
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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.