Finding the Fourth Proportional to 135,403.82, 186,867.80 and 74,980.08
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Solution
The fourth proportional to 135,403.82, 186,867.80 and 74,980.08 is: 103,478.34
Step by Step Solution
- Step 1: Write the proportion equation
135,403.82 : 186,867.80 = 74,980.08 : x - Step 2: Convert to fraction form
135,403.82/186,867.80 = 74,980.08/x - Step 3: Cross multiply
135,403.82x = 186,867.80 × 74,980.08 - Step 4: Simplify right side
135,403.82x = 14,011,362,593.42 - Step 5: Solve for x
x = 14,011,362,593.42/135,403.82 - Step 6: Final answer
x = 103,478.34
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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.