Finding the Fourth Proportional to 128,159,091.46, 176,860,395.30 and 69,421,755.88
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Solution
The fourth proportional to 128,159,091.46, 176,860,395.30 and 69,421,755.88 is: 95,802,483.05
Step by Step Solution
- Step 1: Write the proportion equation
128,159,091.46 : 176,860,395.30 = 69,421,755.88 : x - Step 2: Convert to fraction form
128,159,091.46/176,860,395.30 = 69,421,755.88/x - Step 3: Cross multiply
128,159,091.46x = 176,860,395.30 × 69,421,755.88 - Step 4: Simplify right side
128,159,091.46x = 12,277,959,187,356,900 - Step 5: Solve for x
x = 12,277,959,187,356,900/128,159,091.46 - Step 6: Final answer
x = 95,802,483.05
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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.