Finding the Fourth Proportional to 122,640,353.91, 169,214,590.98 and 69,712,907.63
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Solution
The fourth proportional to 122,640,353.91, 169,214,590.98 and 69,712,907.63 is: 96,187,272.57
Step by Step Solution
- Step 1: Write the proportion equation
122,640,353.91 : 169,214,590.98 = 69,712,907.63 : x - Step 2: Convert to fraction form
122,640,353.91/169,214,590.98 = 69,712,907.63/x - Step 3: Cross multiply
122,640,353.91x = 169,214,590.98 × 69,712,907.63 - Step 4: Simplify right side
122,640,353.91x = 11,796,441,149,790,898 - Step 5: Solve for x
x = 11,796,441,149,790,898/122,640,353.91 - Step 6: Final answer
x = 96,187,272.57
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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.