Finding the Fourth Proportional to 117.69, 162.36 and 70.99
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Solution
The fourth proportional to 117.69, 162.36 and 70.99 is: 97.93
Step by Step Solution
- Step 1: Write the proportion equation
117.69 : 162.36 = 70.99 : x - Step 2: Convert to fraction form
117.69/162.36 = 70.99/x - Step 3: Cross multiply
117.69x = 162.36 × 70.99 - Step 4: Simplify right side
117.69x = 11,525.53 - Step 5: Solve for x
x = 11,525.53/117.69 - Step 6: Final answer
x = 97.93
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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.