Finding the Fourth Proportional to 157,653.87, 217,566.99 and 86,038.53
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Solution
The fourth proportional to 157,653.87, 217,566.99 and 86,038.53 is: 118,735.71
Step by Step Solution
- Step 1: Write the proportion equation
157,653.87 : 217,566.99 = 86,038.53 : x - Step 2: Convert to fraction form
157,653.87/217,566.99 = 86,038.53/x - Step 3: Cross multiply
157,653.87x = 217,566.99 × 86,038.53 - Step 4: Simplify right side
157,653.87x = 18,719,143,996.12 - Step 5: Solve for x
x = 18,719,143,996.12/157,653.87 - Step 6: Final answer
x = 118,735.71
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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.