Finding the Fourth Proportional to 157,225.98, 216,975.99 and 85,609.02
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Solution
The fourth proportional to 157,225.98, 216,975.99 and 85,609.02 is: 118,142.70
Step by Step Solution
- Step 1: Write the proportion equation
157,225.98 : 216,975.99 = 85,609.02 : x - Step 2: Convert to fraction form
157,225.98/216,975.99 = 85,609.02/x - Step 3: Cross multiply
157,225.98x = 216,975.99 × 85,609.02 - Step 4: Simplify right side
157,225.98x = 18,575,101,867.43 - Step 5: Solve for x
x = 18,575,101,867.43/157,225.98 - Step 6: Final answer
x = 118,142.70
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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.