Finding the Fourth Proportional to 122,777,607.68, 169,437,108.72 and 67,026,000.80
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Solution
The fourth proportional to 122,777,607.68, 169,437,108.72 and 67,026,000.80 is: 92,498,070.29
Step by Step Solution
- Step 1: Write the proportion equation
122,777,607.68 : 169,437,108.72 = 67,026,000.80 : x - Step 2: Convert to fraction form
122,777,607.68/169,437,108.72 = 67,026,000.80/x - Step 3: Cross multiply
122,777,607.68x = 169,437,108.72 × 67,026,000.80 - Step 4: Simplify right side
122,777,607.68x = 11,356,691,784,616,406 - Step 5: Solve for x
x = 11,356,691,784,616,406/122,777,607.68 - Step 6: Final answer
x = 92,498,070.29
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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.