Finding the Fourth Proportional to 139,219,408.80, 208,829,113.20 and 118,616,119.20
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Solution
The fourth proportional to 139,219,408.80, 208,829,113.20 and 118,616,119.20 is: 177,924,178.80
Step by Step Solution
- Step 1: Write the proportion equation
139,219,408.80 : 208,829,113.20 = 118,616,119.20 : x - Step 2: Convert to fraction form
139,219,408.80/208,829,113.20 = 118,616,119.20/x - Step 3: Cross multiply
139,219,408.80x = 208,829,113.20 × 118,616,119.20 - Step 4: Simplify right side
139,219,408.80x = 24,770,498,983,761,492 - Step 5: Solve for x
x = 24,770,498,983,761,492/139,219,408.80 - Step 6: Final answer
x = 177,924,178.80
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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.