Finding the Fourth Proportional to 217,145.64, 299,669.58 and 121,653.12
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Solution
The fourth proportional to 217,145.64, 299,669.58 and 121,653.12 is: 167,886.12
Step by Step Solution
- Step 1: Write the proportion equation
217,145.64 : 299,669.58 = 121,653.12 : x - Step 2: Convert to fraction form
217,145.64/299,669.58 = 121,653.12/x - Step 3: Cross multiply
217,145.64x = 299,669.58 × 121,653.12 - Step 4: Simplify right side
217,145.64x = 36,455,739,376.09 - Step 5: Solve for x
x = 36,455,739,376.09/217,145.64 - Step 6: Final answer
x = 167,886.12
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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.