Finding the Fourth Proportional to 121,388.91, 167,513.45 and 70,398.46
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Solution
The fourth proportional to 121,388.91, 167,513.45 and 70,398.46 is: 97,147.99
Step by Step Solution
- Step 1: Write the proportion equation
121,388.91 : 167,513.45 = 70,398.46 : x - Step 2: Convert to fraction form
121,388.91/167,513.45 = 70,398.46/x - Step 3: Cross multiply
121,388.91x = 167,513.45 × 70,398.46 - Step 4: Simplify right side
121,388.91x = 11,792,688,909.29 - Step 5: Solve for x
x = 11,792,688,909.29/121,388.91 - Step 6: Final answer
x = 97,147.99
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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.