Finding the Fourth Proportional to 135,430.08, 186,894.06 and 74,999.42
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Solution
The fourth proportional to 135,430.08, 186,894.06 and 74,999.42 is: 103,499.50
Step by Step Solution
- Step 1: Write the proportion equation
135,430.08 : 186,894.06 = 74,999.42 : x - Step 2: Convert to fraction form
135,430.08/186,894.06 = 74,999.42/x - Step 3: Cross multiply
135,430.08x = 186,894.06 × 74,999.42 - Step 4: Simplify right side
135,430.08x = 14,016,946,101.45 - Step 5: Solve for x
x = 14,016,946,101.45/135,430.08 - Step 6: Final answer
x = 103,499.50
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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.