Finding the Fourth Proportional to 121,539.92, 167,760.28 and 70,564.08
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Solution
The fourth proportional to 121,539.92, 167,760.28 and 70,564.08 is: 97,398.86
Step by Step Solution
- Step 1: Write the proportion equation
121,539.92 : 167,760.28 = 70,564.08 : x - Step 2: Convert to fraction form
121,539.92/167,760.28 = 70,564.08/x - Step 3: Cross multiply
121,539.92x = 167,760.28 × 70,564.08 - Step 4: Simplify right side
121,539.92x = 11,837,849,818.74 - Step 5: Solve for x
x = 11,837,849,818.74/121,539.92 - Step 6: Final answer
x = 97,398.86
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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.