Finding the Fourth Proportional to 107,214.97, 147,908.13 and 66,938.68
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Solution
The fourth proportional to 107,214.97, 147,908.13 and 66,938.68 is: 92,345.08
Step by Step Solution
- Step 1: Write the proportion equation
107,214.97 : 147,908.13 = 66,938.68 : x - Step 2: Convert to fraction form
107,214.97/147,908.13 = 66,938.68/x - Step 3: Cross multiply
107,214.97x = 147,908.13 × 66,938.68 - Step 4: Simplify right side
107,214.97x = 9,900,774,983.47 - Step 5: Solve for x
x = 9,900,774,983.47/107,214.97 - Step 6: Final answer
x = 92,345.08
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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.