Finding the Fourth Proportional to 100,102,637.60, 149,860,023.60 and 74,656,455.20
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Solution
The fourth proportional to 100,102,637.60, 149,860,023.60 and 74,656,455.20 is: 111,765,467.99
Step by Step Solution
- Step 1: Write the proportion equation
100,102,637.60 : 149,860,023.60 = 74,656,455.20 : x - Step 2: Convert to fraction form
100,102,637.60/149,860,023.60 = 74,656,455.20/x - Step 3: Cross multiply
100,102,637.60x = 149,860,023.60 × 74,656,455.20 - Step 4: Simplify right side
100,102,637.60x = 11,188,018,138,164,342 - Step 5: Solve for x
x = 11,188,018,138,164,342/100,102,637.60 - Step 6: Final answer
x = 111,765,467.99
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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.