Finding the Fourth Proportional to 157,854.12, 217,853.68 and 86,244.92
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Solution
The fourth proportional to 157,854.12, 217,853.68 and 86,244.92 is: 119,026.18
Step by Step Solution
- Step 1: Write the proportion equation
157,854.12 : 217,853.68 = 86,244.92 : x - Step 2: Convert to fraction form
157,854.12/217,853.68 = 86,244.92/x - Step 3: Cross multiply
157,854.12x = 217,853.68 × 86,244.92 - Step 4: Simplify right side
157,854.12x = 18,788,773,203.31 - Step 5: Solve for x
x = 18,788,773,203.31/157,854.12 - Step 6: Final answer
x = 119,026.18
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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.