Finding the Fourth Proportional to 135,407.99, 186,860.75 and 74,977.33
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Solution
The fourth proportional to 135,407.99, 186,860.75 and 74,977.33 is: 103,467.46
Step by Step Solution
- Step 1: Write the proportion equation
135,407.99 : 186,860.75 = 74,977.33 : x - Step 2: Convert to fraction form
135,407.99/186,860.75 = 74,977.33/x - Step 3: Cross multiply
135,407.99x = 186,860.75 × 74,977.33 - Step 4: Simplify right side
135,407.99x = 14,010,320,209.06 - Step 5: Solve for x
x = 14,010,320,209.06/135,407.99 - Step 6: Final answer
x = 103,467.46
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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.