Finding the Fourth Proportional to 128,158,832.19, 176,860,037.60 and 69,421,497.31
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Solution
The fourth proportional to 128,158,832.19, 176,860,037.60 and 69,421,497.31 is: 95,802,126.27
Step by Step Solution
- Step 1: Write the proportion equation
128,158,832.19 : 176,860,037.60 = 69,421,497.31 : x - Step 2: Convert to fraction form
128,158,832.19/176,860,037.60 = 69,421,497.31/x - Step 3: Cross multiply
128,158,832.19x = 176,860,037.60 × 69,421,497.31 - Step 4: Simplify right side
128,158,832.19x = 12,277,888,624,226,302 - Step 5: Solve for x
x = 12,277,888,624,226,302/128,158,832.19 - Step 6: Final answer
x = 95,802,126.27
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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.