Finding the Fourth Proportional to 157,653.98, 217,567.11 and 86,038.62
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Solution
The fourth proportional to 157,653.98, 217,567.11 and 86,038.62 is: 118,735.82
Step by Step Solution
- Step 1: Write the proportion equation
157,653.98 : 217,567.11 = 86,038.62 : x - Step 2: Convert to fraction form
157,653.98/217,567.11 = 86,038.62/x - Step 3: Cross multiply
157,653.98x = 217,567.11 × 86,038.62 - Step 4: Simplify right side
157,653.98x = 18,719,173,901.79 - Step 5: Solve for x
x = 18,719,173,901.79/157,653.98 - Step 6: Final answer
x = 118,735.82
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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.