Finding the Fourth Proportional to 96,778,876.80, 145,168,315.20 and 79,772,764.80
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Solution
The fourth proportional to 96,778,876.80, 145,168,315.20 and 79,772,764.80 is: 119,659,147.20
Step by Step Solution
- Step 1: Write the proportion equation
96,778,876.80 : 145,168,315.20 = 79,772,764.80 : x - Step 2: Convert to fraction form
96,778,876.80/145,168,315.20 = 79,772,764.80/x - Step 3: Cross multiply
96,778,876.80x = 145,168,315.20 × 79,772,764.80 - Step 4: Simplify right side
96,778,876.80x = 11,580,477,864,861,864 - Step 5: Solve for x
x = 11,580,477,864,861,864/96,778,876.80 - Step 6: Final answer
x = 119,659,147.20
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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.