Finding the Fourth Proportional to 139,507.19, 208,313.30 and 135,723.79
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Solution
The fourth proportional to 139,507.19, 208,313.30 and 135,723.79 is: 202,663.90
Step by Step Solution
- Step 1: Write the proportion equation
139,507.19 : 208,313.30 = 135,723.79 : x - Step 2: Convert to fraction form
139,507.19/208,313.30 = 135,723.79/x - Step 3: Cross multiply
139,507.19x = 208,313.30 × 135,723.79 - Step 4: Simplify right side
139,507.19x = 28,273,071,196.40 - Step 5: Solve for x
x = 28,273,071,196.40/139,507.19 - Step 6: Final answer
x = 202,663.90
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Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.