Finding the Fourth Proportional to 128,296,759.90, 177,050,844.36 and 69,559,538.62
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Solution
The fourth proportional to 128,296,759.90, 177,050,844.36 and 69,559,538.62 is: 95,992,876.63
Step by Step Solution
- Step 1: Write the proportion equation
128,296,759.90 : 177,050,844.36 = 69,559,538.62 : x - Step 2: Convert to fraction form
128,296,759.90/177,050,844.36 = 69,559,538.62/x - Step 3: Cross multiply
128,296,759.90x = 177,050,844.36 × 69,559,538.62 - Step 4: Simplify right side
128,296,759.90x = 12,315,575,044,729,976 - Step 5: Solve for x
x = 12,315,575,044,729,976/128,296,759.90 - Step 6: Final answer
x = 95,992,876.63
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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.