Finding the Fourth Proportional to 157,438.08, 217,270.62 and 85,822.20
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Solution
The fourth proportional to 157,438.08, 217,270.62 and 85,822.20 is: 118,437.94
Step by Step Solution
- Step 1: Write the proportion equation
157,438.08 : 217,270.62 = 85,822.20 : x - Step 2: Convert to fraction form
157,438.08/217,270.62 = 85,822.20/x - Step 3: Cross multiply
157,438.08x = 217,270.62 × 85,822.20 - Step 4: Simplify right side
157,438.08x = 18,646,642,603.76 - Step 5: Solve for x
x = 18,646,642,603.76/157,438.08 - Step 6: Final answer
x = 118,437.94
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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.