Finding the Fourth Proportional to 157,426.05, 217,246.53 and 85,806.06
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Solution
The fourth proportional to 157,426.05, 217,246.53 and 85,806.06 is: 118,411.59
Step by Step Solution
- Step 1: Write the proportion equation
157,426.05 : 217,246.53 = 85,806.06 : x - Step 2: Convert to fraction form
157,426.05/217,246.53 = 85,806.06/x - Step 3: Cross multiply
157,426.05x = 217,246.53 × 85,806.06 - Step 4: Simplify right side
157,426.05x = 18,641,068,787.97 - Step 5: Solve for x
x = 18,641,068,787.97/157,426.05 - Step 6: Final answer
x = 118,411.59
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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.