Finding the Fourth Proportional to 117,660,320.80, 176,490,481.20 and 87,427,232.80
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Solution
The fourth proportional to 117,660,320.80, 176,490,481.20 and 87,427,232.80 is: 131,140,849.20
Step by Step Solution
- Step 1: Write the proportion equation
117,660,320.80 : 176,490,481.20 = 87,427,232.80 : x - Step 2: Convert to fraction form
117,660,320.80/176,490,481.20 = 87,427,232.80/x - Step 3: Cross multiply
117,660,320.80x = 176,490,481.20 × 87,427,232.80 - Step 4: Simplify right side
117,660,320.80x = 15,430,074,386,856,422 - Step 5: Solve for x
x = 15,430,074,386,856,422/117,660,320.80 - Step 6: Final answer
x = 131,140,849.20
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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.