Finding the Fourth Proportional to 106,631,779.20, 149,486,044.80 and 106,631,779.20
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Solution
The fourth proportional to 106,631,779.20, 149,486,044.80 and 106,631,779.20 is: 149,486,044.80
Step by Step Solution
- Step 1: Write the proportion equation
106,631,779.20 : 149,486,044.80 = 106,631,779.20 : x - Step 2: Convert to fraction form
106,631,779.20/149,486,044.80 = 106,631,779.20/x - Step 3: Cross multiply
106,631,779.20x = 149,486,044.80 × 106,631,779.20 - Step 4: Simplify right side
106,631,779.20x = 15,939,962,922,594,910 - Step 5: Solve for x
x = 15,939,962,922,594,910/106,631,779.20 - Step 6: Final answer
x = 149,486,044.80
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Why These Related Problems?
These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.