Finding the Fourth Proportional to 139,968,108.80, 209,952,163.20 and 130,402,170.80
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Solution
The fourth proportional to 139,968,108.80, 209,952,163.20 and 130,402,170.80 is: 195,603,256.20
Step by Step Solution
- Step 1: Write the proportion equation
139,968,108.80 : 209,952,163.20 = 130,402,170.80 : x - Step 2: Convert to fraction form
139,968,108.80/209,952,163.20 = 130,402,170.80/x - Step 3: Cross multiply
139,968,108.80x = 209,952,163.20 × 130,402,170.80 - Step 4: Simplify right side
139,968,108.80x = 27,378,217,845,435,872 - Step 5: Solve for x
x = 27,378,217,845,435,872/139,968,108.80 - Step 6: Final answer
x = 195,603,256.20
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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.