Finding the Fourth Proportional to 122,102,455.90, 168,464,644.95 and 73,192,037.98
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Solution
The fourth proportional to 122,102,455.90, 168,464,644.95 and 73,192,037.98 is: 100,982,986.79
Step by Step Solution
- Step 1: Write the proportion equation
122,102,455.90 : 168,464,644.95 = 73,192,037.98 : x - Step 2: Convert to fraction form
122,102,455.90/168,464,644.95 = 73,192,037.98/x - Step 3: Cross multiply
122,102,455.90x = 168,464,644.95 × 73,192,037.98 - Step 4: Simplify right side
122,102,455.90x = 12,330,270,691,467,616 - Step 5: Solve for x
x = 12,330,270,691,467,616/122,102,455.90 - Step 6: Final answer
x = 100,982,986.79
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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.