Finding the Fourth Proportional to 155,723.98, 214,646.70 and 121,673.08
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Solution
The fourth proportional to 155,723.98, 214,646.70 and 121,673.08 is: 167,711.65
Step by Step Solution
- Step 1: Write the proportion equation
155,723.98 : 214,646.70 = 121,673.08 : x - Step 2: Convert to fraction form
155,723.98/214,646.70 = 121,673.08/x - Step 3: Cross multiply
155,723.98x = 214,646.70 × 121,673.08 - Step 4: Simplify right side
155,723.98x = 26,116,725,100.84 - Step 5: Solve for x
x = 26,116,725,100.84/155,723.98 - Step 6: Final answer
x = 167,711.65
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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.