Finding the Fourth Proportional to 128,260,633.16, 176,994,930.09 and 69,522,037.13
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Solution
The fourth proportional to 128,260,633.16, 176,994,930.09 and 69,522,037.13 is: 95,937,839.99
Step by Step Solution
- Step 1: Write the proportion equation
128,260,633.16 : 176,994,930.09 = 69,522,037.13 : x - Step 2: Convert to fraction form
128,260,633.16/176,994,930.09 = 69,522,037.13/x - Step 3: Cross multiply
128,260,633.16x = 176,994,930.09 × 69,522,037.13 - Step 4: Simplify right side
128,260,633.16x = 12,305,048,101,538,734 - Step 5: Solve for x
x = 12,305,048,101,538,734/128,260,633.16 - Step 6: Final answer
x = 95,937,839.99
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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.