Finding the Fourth Proportional to 135,519,301.68, 187,015,979.16 and 76,781,851.44
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Solution
The fourth proportional to 135,519,301.68, 187,015,979.16 and 76,781,851.44 is: 105,958,582.66
Step by Step Solution
- Step 1: Write the proportion equation
135,519,301.68 : 187,015,979.16 = 76,781,851.44 : x - Step 2: Convert to fraction form
135,519,301.68/187,015,979.16 = 76,781,851.44/x - Step 3: Cross multiply
135,519,301.68x = 187,015,979.16 × 76,781,851.44 - Step 4: Simplify right side
135,519,301.68x = 14,359,433,128,769,256 - Step 5: Solve for x
x = 14,359,433,128,769,256/135,519,301.68 - Step 6: Final answer
x = 105,958,582.66
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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.