Finding the Fourth Proportional to 128,159,092.46, 176,860,396.68 and 69,421,756.88
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Solution
The fourth proportional to 128,159,092.46, 176,860,396.68 and 69,421,756.88 is: 95,802,484.43
Step by Step Solution
- Step 1: Write the proportion equation
128,159,092.46 : 176,860,396.68 = 69,421,756.88 : x - Step 2: Convert to fraction form
128,159,092.46/176,860,396.68 = 69,421,756.88/x - Step 3: Cross multiply
128,159,092.46x = 176,860,396.68 × 69,421,756.88 - Step 4: Simplify right side
128,159,092.46x = 12,277,959,460,019,318 - Step 5: Solve for x
x = 12,277,959,460,019,318/128,159,092.46 - Step 6: Final answer
x = 95,802,484.43
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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.