Finding the Fourth Proportional to 139,968,128.20, 209,952,192.30 and 125,859,353.80
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Solution
The fourth proportional to 139,968,128.20, 209,952,192.30 and 125,859,353.80 is: 188,789,030.70
Step by Step Solution
- Step 1: Write the proportion equation
139,968,128.20 : 209,952,192.30 = 125,859,353.80 : x - Step 2: Convert to fraction form
139,968,128.20/209,952,192.30 = 125,859,353.80/x - Step 3: Cross multiply
139,968,128.20x = 209,952,192.30 × 125,859,353.80 - Step 4: Simplify right side
139,968,128.20x = 26,424,447,251,771,336 - Step 5: Solve for x
x = 26,424,447,251,771,336/139,968,128.20 - Step 6: Final answer
x = 188,789,030.70
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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.