Finding the Fourth Proportional to 210,980.69, 291,146.10 and 120,365.99
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Solution
The fourth proportional to 210,980.69, 291,146.10 and 120,365.99 is: 166,100.93
Step by Step Solution
- Step 1: Write the proportion equation
210,980.69 : 291,146.10 = 120,365.99 : x - Step 2: Convert to fraction form
210,980.69/291,146.10 = 120,365.99/x - Step 3: Cross multiply
210,980.69x = 291,146.10 × 120,365.99 - Step 4: Simplify right side
210,980.69x = 35,044,088,561.14 - Step 5: Solve for x
x = 35,044,088,561.14/210,980.69 - Step 6: Final answer
x = 166,100.93
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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.