Finding the Fourth Proportional to 139,968,110.20, 209,952,165.30 and 125,229,479.80
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Solution
The fourth proportional to 139,968,110.20, 209,952,165.30 and 125,229,479.80 is: 187,844,219.70
Step by Step Solution
- Step 1: Write the proportion equation
139,968,110.20 : 209,952,165.30 = 125,229,479.80 : x - Step 2: Convert to fraction form
139,968,110.20/209,952,165.30 = 125,229,479.80/x - Step 3: Cross multiply
139,968,110.20x = 209,952,165.30 × 125,229,479.80 - Step 4: Simplify right side
139,968,110.20x = 26,292,200,443,402,612 - Step 5: Solve for x
x = 26,292,200,443,402,612/139,968,110.20 - Step 6: Final answer
x = 187,844,219.70
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.