Finding the Fourth Proportional to 138,101.47, 190,472.07 and 89,718.99
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Solution
The fourth proportional to 138,101.47, 190,472.07 and 89,718.99 is: 123,742.06
Step by Step Solution
- Step 1: Write the proportion equation
138,101.47 : 190,472.07 = 89,718.99 : x - Step 2: Convert to fraction form
138,101.47/190,472.07 = 89,718.99/x - Step 3: Cross multiply
138,101.47x = 190,472.07 × 89,718.99 - Step 4: Simplify right side
138,101.47x = 17,088,961,056.92 - Step 5: Solve for x
x = 17,088,961,056.92/138,101.47 - Step 6: Final answer
x = 123,742.06
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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.