Finding the Fourth Proportional to 138,971,860.20, 208,386,544.05 and 73,428,245.10
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Solution
The fourth proportional to 138,971,860.20, 208,386,544.05 and 73,428,245.10 is: 110,104,723.43
Step by Step Solution
- Step 1: Write the proportion equation
138,971,860.20 : 208,386,544.05 = 73,428,245.10 : x - Step 2: Convert to fraction form
138,971,860.20/208,386,544.05 = 73,428,245.10/x - Step 3: Cross multiply
138,971,860.20x = 208,386,544.05 × 73,428,245.10 - Step 4: Simplify right side
138,971,860.20x = 15,301,458,232,045,346 - Step 5: Solve for x
x = 15,301,458,232,045,346/138,971,860.20 - Step 6: Final answer
x = 110,104,723.43
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.