Finding the Fourth Proportional to 157,984.09, 218,018.10 and 86,364.07
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Solution
The fourth proportional to 157,984.09, 218,018.10 and 86,364.07 is: 119,182.45
Step by Step Solution
- Step 1: Write the proportion equation
157,984.09 : 218,018.10 = 86,364.07 : x - Step 2: Convert to fraction form
157,984.09/218,018.10 = 86,364.07/x - Step 3: Cross multiply
157,984.09x = 218,018.10 × 86,364.07 - Step 4: Simplify right side
157,984.09x = 18,828,930,449.67 - Step 5: Solve for x
x = 18,828,930,449.67/157,984.09 - Step 6: Final answer
x = 119,182.45
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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.