Finding the Fourth Proportional to 135,426.36, 186,888.90 and 74,995.68
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Solution
The fourth proportional to 135,426.36, 186,888.90 and 74,995.68 is: 103,494.33
Step by Step Solution
- Step 1: Write the proportion equation
135,426.36 : 186,888.90 = 74,995.68 : x - Step 2: Convert to fraction form
135,426.36/186,888.90 = 74,995.68/x - Step 3: Cross multiply
135,426.36x = 186,888.90 × 74,995.68 - Step 4: Simplify right side
135,426.36x = 14,015,860,139.95 - Step 5: Solve for x
x = 14,015,860,139.95/135,426.36 - Step 6: Final answer
x = 103,494.33
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1.5x scale
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.