Finding the Fourth Proportional to 157,430.43, 217,253.68 and 85,810.23
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Solution
The fourth proportional to 157,430.43, 217,253.68 and 85,810.23 is: 118,417.95
Step by Step Solution
- Step 1: Write the proportion equation
157,430.43 : 217,253.68 = 85,810.23 : x - Step 2: Convert to fraction form
157,430.43/217,253.68 = 85,810.23/x - Step 3: Cross multiply
157,430.43x = 217,253.68 × 85,810.23 - Step 4: Simplify right side
157,430.43x = 18,642,588,034.62 - Step 5: Solve for x
x = 18,642,588,034.62/157,430.43 - Step 6: Final answer
x = 118,417.95
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1.5x scale
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.