Finding the Fourth Proportional to 157,809.08, 217,773.17 and 86,189.39
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Solution
The fourth proportional to 157,809.08, 217,773.17 and 86,189.39 is: 118,939.52
Step by Step Solution
- Step 1: Write the proportion equation
157,809.08 : 217,773.17 = 86,189.39 : x - Step 2: Convert to fraction form
157,809.08/217,773.17 = 86,189.39/x - Step 3: Cross multiply
157,809.08x = 217,773.17 × 86,189.39 - Step 4: Simplify right side
157,809.08x = 18,769,736,300.71 - Step 5: Solve for x
x = 18,769,736,300.71/157,809.08 - Step 6: Final answer
x = 118,939.52
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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.