Finding the Fourth Proportional to 120,365,840.90, 166,102,487.98 and 70,811,570.18
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Solution
The fourth proportional to 120,365,840.90, 166,102,487.98 and 70,811,570.18 is: 97,718,571.12
Step by Step Solution
- Step 1: Write the proportion equation
120,365,840.90 : 166,102,487.98 = 70,811,570.18 : x - Step 2: Convert to fraction form
120,365,840.90/166,102,487.98 = 70,811,570.18/x - Step 3: Cross multiply
120,365,840.90x = 166,102,487.98 × 70,811,570.18 - Step 4: Simplify right side
120,365,840.90x = 11,761,977,984,668,376 - Step 5: Solve for x
x = 11,761,977,984,668,376/120,365,840.90 - Step 6: Final answer
x = 97,718,571.12
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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.