Finding the Fourth Proportional to 139,968,170.80, 209,952,256.20 and 120,484,625.20
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Solution
The fourth proportional to 139,968,170.80, 209,952,256.20 and 120,484,625.20 is: 180,726,937.80
Step by Step Solution
- Step 1: Write the proportion equation
139,968,170.80 : 209,952,256.20 = 120,484,625.20 : x - Step 2: Convert to fraction form
139,968,170.80/209,952,256.20 = 120,484,625.20/x - Step 3: Cross multiply
139,968,170.80x = 209,952,256.20 × 120,484,625.20 - Step 4: Simplify right side
139,968,170.80x = 25,296,018,898,151,376 - Step 5: Solve for x
x = 25,296,018,898,151,376/139,968,170.80 - Step 6: Final answer
x = 180,726,937.80
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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.