Finding the Fourth Proportional to 157,860.34, 217,862.28 and 86,251.12
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Solution
The fourth proportional to 157,860.34, 217,862.28 and 86,251.12 is: 119,034.75
Step by Step Solution
- Step 1: Write the proportion equation
157,860.34 : 217,862.28 = 86,251.12 : x - Step 2: Convert to fraction form
157,860.34/217,862.28 = 86,251.12/x - Step 3: Cross multiply
157,860.34x = 217,862.28 × 86,251.12 - Step 4: Simplify right side
157,860.34x = 18,790,865,655.75 - Step 5: Solve for x
x = 18,790,865,655.75/157,860.34 - Step 6: Final answer
x = 119,034.75
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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.