Finding the Fourth Proportional to 157,885.59, 217,875.71 and 86,268.09
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Solution
The fourth proportional to 157,885.59, 217,875.71 and 86,268.09 is: 119,046.46
Step by Step Solution
- Step 1: Write the proportion equation
157,885.59 : 217,875.71 = 86,268.09 : x - Step 2: Convert to fraction form
157,885.59/217,875.71 = 86,268.09/x - Step 3: Cross multiply
157,885.59x = 217,875.71 × 86,268.09 - Step 4: Simplify right side
157,885.59x = 18,795,721,359.09 - Step 5: Solve for x
x = 18,795,721,359.09/157,885.59 - Step 6: Final answer
x = 119,046.46
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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.