Finding the Fourth Proportional to 147,612.71, 203,699.65 and 87,202.75
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Solution
The fourth proportional to 147,612.71, 203,699.65 and 87,202.75 is: 120,336.32
Step by Step Solution
- Step 1: Write the proportion equation
147,612.71 : 203,699.65 = 87,202.75 : x - Step 2: Convert to fraction form
147,612.71/203,699.65 = 87,202.75/x - Step 3: Cross multiply
147,612.71x = 203,699.65 × 87,202.75 - Step 4: Simplify right side
147,612.71x = 17,763,169,654.04 - Step 5: Solve for x
x = 17,763,169,654.04/147,612.71 - Step 6: Final answer
x = 120,336.32
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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.