Finding the Fourth Proportional to 81,445,860.80, 122,168,791.20 and 67,096,953.80
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Solution
The fourth proportional to 81,445,860.80, 122,168,791.20 and 67,096,953.80 is: 100,645,430.70
Step by Step Solution
- Step 1: Write the proportion equation
81,445,860.80 : 122,168,791.20 = 67,096,953.80 : x - Step 2: Convert to fraction form
81,445,860.80/122,168,791.20 = 67,096,953.80/x - Step 3: Cross multiply
81,445,860.80x = 122,168,791.20 × 67,096,953.80 - Step 4: Simplify right side
81,445,860.80x = 8,197,153,738,948,246 - Step 5: Solve for x
x = 8,197,153,738,948,246/81,445,860.80 - Step 6: Final answer
x = 100,645,430.70
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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.