Finding the Fourth Proportional to 138,128,088.88, 190,610,060.71 and 78,583,777.12
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Solution
The fourth proportional to 138,128,088.88, 190,610,060.71 and 78,583,777.12 is: 108,441,799.55
Step by Step Solution
- Step 1: Write the proportion equation
138,128,088.88 : 190,610,060.71 = 78,583,777.12 : x - Step 2: Convert to fraction form
138,128,088.88/190,610,060.71 = 78,583,777.12/x - Step 3: Cross multiply
138,128,088.88x = 190,610,060.71 × 78,583,777.12 - Step 4: Simplify right side
138,128,088.88x = 14,978,858,526,318,340 - Step 5: Solve for x
x = 14,978,858,526,318,340/138,128,088.88 - Step 6: Final answer
x = 108,441,799.55
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.