Finding the Fourth Proportional to 122,445,531.40, 168,968,454.42 and 76,034,789.68
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Solution
The fourth proportional to 122,445,531.40, 168,968,454.42 and 76,034,789.68 is: 104,924,048.66
Step by Step Solution
- Step 1: Write the proportion equation
122,445,531.40 : 168,968,454.42 = 76,034,789.68 : x - Step 2: Convert to fraction form
122,445,531.40/168,968,454.42 = 76,034,789.68/x - Step 3: Cross multiply
122,445,531.40x = 168,968,454.42 × 76,034,789.68 - Step 4: Simplify right side
122,445,531.40x = 12,847,480,894,379,366 - Step 5: Solve for x
x = 12,847,480,894,379,366/122,445,531.40 - Step 6: Final answer
x = 104,924,048.66
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.