Finding the Fourth Proportional to 157,709.16, 217,515.24 and 101,125.80
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Solution
The fourth proportional to 157,709.16, 217,515.24 and 101,125.80 is: 139,474.48
Step by Step Solution
- Step 1: Write the proportion equation
157,709.16 : 217,515.24 = 101,125.80 : x - Step 2: Convert to fraction form
157,709.16/217,515.24 = 101,125.80/x - Step 3: Cross multiply
157,709.16x = 217,515.24 × 101,125.80 - Step 4: Simplify right side
157,709.16x = 21,996,402,657.19 - Step 5: Solve for x
x = 21,996,402,657.19/157,709.16 - Step 6: Final answer
x = 139,474.48
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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.