Finding the Fourth Proportional to 128,296,760.40, 177,050,845.05 and 69,559,539.12
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Solution
The fourth proportional to 128,296,760.40, 177,050,845.05 and 69,559,539.12 is: 95,992,877.33
Step by Step Solution
- Step 1: Write the proportion equation
128,296,760.40 : 177,050,845.05 = 69,559,539.12 : x - Step 2: Convert to fraction form
128,296,760.40/177,050,845.05 = 69,559,539.12/x - Step 3: Cross multiply
128,296,760.40x = 177,050,845.05 × 69,559,539.12 - Step 4: Simplify right side
128,296,760.40x = 12,315,575,182,484,536 - Step 5: Solve for x
x = 12,315,575,182,484,536/128,296,760.40 - Step 6: Final answer
x = 95,992,877.33
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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.