Finding the Fourth Proportional to 223,681.18, 308,681.36 and 121,707.36
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Solution
The fourth proportional to 223,681.18, 308,681.36 and 121,707.36 is: 167,956.88
Step by Step Solution
- Step 1: Write the proportion equation
223,681.18 : 308,681.36 = 121,707.36 : x - Step 2: Convert to fraction form
223,681.18/308,681.36 = 121,707.36/x - Step 3: Cross multiply
223,681.18x = 308,681.36 × 121,707.36 - Step 4: Simplify right side
223,681.18x = 37,568,793,406.81 - Step 5: Solve for x
x = 37,568,793,406.81/223,681.18 - Step 6: Final answer
x = 167,956.88
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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.