Finding the Fourth Proportional to 80,122,307.40, 120,183,461.10 and 79,272,001.80
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Solution
The fourth proportional to 80,122,307.40, 120,183,461.10 and 79,272,001.80 is: 118,908,002.70
Step by Step Solution
- Step 1: Write the proportion equation
80,122,307.40 : 120,183,461.10 = 79,272,001.80 : x - Step 2: Convert to fraction form
80,122,307.40/120,183,461.10 = 79,272,001.80/x - Step 3: Cross multiply
80,122,307.40x = 120,183,461.10 × 79,272,001.80 - Step 4: Simplify right side
80,122,307.40x = 9,527,183,544,649,430 - Step 5: Solve for x
x = 9,527,183,544,649,430/80,122,307.40 - Step 6: Final answer
x = 118,908,002.70
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1.5x scale
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.